{"id":14974,"date":"2025-10-22T06:03:52","date_gmt":"2025-10-22T05:03:52","guid":{"rendered":"https:\/\/mcqsadda.com\/?p=14974"},"modified":"2025-11-30T07:59:32","modified_gmt":"2025-11-30T07:59:32","slug":"data-representation-number-system-top-100-mcqs-with-answer-and-explanation","status":"publish","type":"post","link":"https:\/\/mcqsadda.com\/index.php\/2025\/10\/22\/data-representation-number-system-top-100-mcqs-with-answer-and-explanation\/","title":{"rendered":"Data Representation &amp; Number system Top 100 MCQs With Answer and Explanation"},"content":{"rendered":"\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">1. The smallest unit of data in a computer is:<br><\/mark><\/strong>a) Byte<br>b) Bit<br>c) Nibble<br>d) Word<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: b) Bit <\/b><BR>\n<b>Explanation:<\/b> A bit (binary digit) is the smallest unit, representing either 0 or 1. \n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">2. 1 Byte = ?<br><\/mark><\/strong>a) 2 bits<br>b) 4 bits<br>c) 8 bits<br>d) 16 bits<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: c) 8 bits <\/b><BR>\n<b>Explanation:<\/b> A byte consists of 8 bits. \n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">3. A Nibble is equal to:<br><\/mark><\/strong>a) 2 bits<br>b) 4 bits<br>c) 6 bits<br>d) 8 bits<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: b) 4 bits <\/b><BR>\n<b>Explanation:<\/b> A nibble is half a byte (4 bits).\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">4. Which of the following is a positional number system?<br><\/mark><\/strong>a) Roman Numbers<br>b) Decimal Numbers<br>c) Abacus Notation<br>d) None of the above<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: b) Decimal Numbers <\/b><BR>\n<b>Explanation:<\/b> Decimal system uses place values (units, tens, hundreds).\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">5. Decimal number system is based on:<br><\/mark><\/strong>a) Base 2<br>b) Base 8<br>c) Base 10<br>d) Base 16<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: c) Base 10 <\/b><BR>\n<b>Explanation:<\/b> Decimal uses digits 0\u20139.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">6. Binary number system is based on:<br><\/mark><\/strong>a) Base 8<br>b) Base 2<br>c) Base 16<br>d) Base 10<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: b) Base 2 <\/b><BR>\n<b>Explanation:<\/b> Binary digits are 0 and 1.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">7. Octal number system uses digits:<br><\/mark><\/strong>a) 0\u20137<br>b) 0\u20138<br>c) 1\u20138<br>d) 0\u20139<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: a) 0\u20137 <\/b><BR>\n<b>Explanation:<\/b> Base 8 system uses digits 0 through 7.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">8. Hexadecimal number system has base:<br><\/mark><\/strong>a) 2<br>b) 8<br>c) 10<br>d) 16<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: d) 16 <\/b><BR>\n<b>Explanation:<\/b> Hexadecimal uses digits 0\u20139 and A\u2013F.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">9. In Hexadecimal, letter \u2018A\u2019 represents decimal:<br><\/mark><\/strong>a) 9<br>b) 10<br>c) 11<br>d) 12<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: b) 10 <\/b><BR>\n<b>Explanation:<\/b> A=10, B=11, C=12, D=13, E=14, F=15.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">10. 1010 (binary) = ? (decimal)<br><\/mark><\/strong>a) 8<br>b) 9<br>c) 10<br>d) 11<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: c) 10 <\/b><BR>\n<b>Explanation:<\/b> 1\u00d72\u00b3 + 0\u00d72\u00b2 + 1\u00d72\u00b9 + 0\u00d72\u2070 = 8+0+2+0=10.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">11. 57 (decimal) = ? (binary)<br><\/mark><\/strong>a) 111000<br>b) 111001<br>c) 111010<br>d) 111011<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: b) 111001 <\/b><BR>\n<b>Explanation:<\/b> Divide 57 by 2 repeatedly \u2192 111001.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">12. 1010 (binary) = ? (hexadecimal)<br><\/mark><\/strong>a) A<br>b) B<br>c) C<br>d) D<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: a) A <\/b><BR>\n<b>Explanation:<\/b> 1010 (decimal 10) = Hex A.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">13. Which system is best suited for computer processing?<br><\/mark><\/strong>a) Decimal<br>b) Octal<br>c) Binary<br>d) Hexadecimal<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: c) Binary <\/b><BR>\n<b>Explanation:<\/b> Computers use binary internally.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong>14. 75 (decimal) = ? (octal)<br><\/strong>a) 112<br>b) 113<br>c) 114<br>d) 115<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: b) 113 <\/b><BR>\n<b>Explanation:<\/b> Divide 75 by 8 \u2192 113.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">15. The leftmost bit in signed binary is called:<br><\/mark><\/strong>a) Data bit<br>b) Control bit<br>c) Sign bit<br>d) Parity bit<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: c) Sign bit <\/b><BR>\n<b>Explanation:<\/b> Sign bit indicates positive (0) or negative (1).\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">16. Which number system is most compact for representing binary numbers?<br><\/mark><\/strong>a) Decimal<br>b) Octal<br>c) Hexadecimal<br>d) None<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: c) Hexadecimal <\/b><BR>\n<b>Explanation:<\/b> Hexadecimal represents binary in fewer digits.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">17. 2\u2019s complement is used for:<br><\/mark><\/strong>a) Addition<br>b) Subtraction<br>c) Multiplication<br>d) Division<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: b) Subtraction <\/b><BR>\n<b>Explanation:<\/b> 2\u2019s complement simplifies binary subtraction\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">18. 1111 (binary) = ? (decimal)<br><\/mark><\/strong>a) 14<br>b) 15<br>c) 16<br>d) 17<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: b) 15 <\/b><BR>\n<b>Explanation:<\/b> 1\u00d72\u00b3 +1\u00d72\u00b2+1\u00d72\u00b9+1\u00d72\u2070=15.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">19. Excess-3 code is used in:<br><\/mark><\/strong>a) Arithmetic<br>b) Error Detection<br>c) Decimal digit representation<br>d) Data compression<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: c) Decimal digit representation <\/b><BR>\n<b>Explanation:<\/b> Excess-3 is BCD variant used for decimal digits.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">20. Which of these is not a weighted code?<br><\/mark><\/strong>a) Decimal<br>b) Binary<br>c) Octal<br>d) Gray code<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: d) Gray code <\/b><BR>\n<b>Explanation:<\/b> Gray is non-weighted (only 1-bit changes).\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">21. 1 KB = ? Bytes<br><\/mark><\/strong>a) 1000<br>b) 1024<br>c) 500<br>d) 2048<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: b) 1024 <\/b><BR>\n<b>Explanation:<\/b> 1 KB = 2\u00b9\u2070 bytes = 1024 bytes.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">22. 1 MB = ? Bytes<br><\/mark><\/strong>a) 1000 \u00d7 1000<br>b) 1024 \u00d7 1024<br>c) 500 \u00d7 500<br>d) 2048 \u00d7 2048<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: b) 1024 \u00d7 1024 <\/b><BR>\n<b>Explanation:<\/b> 1 MB = 2\u00b2\u2070 = 1,048,576 bytes\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">23. ASCII uses how many bits?<br><\/mark><\/strong>a) 7<br>b) 8<br>c) 9<br>d) 16<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: a) 7 <\/b><BR>\n<b>Explanation:<\/b> ASCII (American Standard Code for Information Interchange) standard uses 7 bits to represent 128 different characters (codes 0 through 127), which includes uppercase and lowercase English letters, numbers, punctuation marks, and control characters.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">24. Unicode provides:<br><\/mark><\/strong>a) 256 characters<br>b) 512 characters<br>c) 65,536 characters<br>d) Unlimited<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: c) 65,536 characters <\/b><BR>\n<b>Explanation:<\/b> Unicode supports 16-bit wide encoding.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">25. Which is not a positional number system?<br><\/mark><\/strong>a) Binary<br>b) Decimal<br>c) Octal<br>d) Roman<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: d) Roman <\/b><BR>\n<b>Explanation:<\/b> Roman numbers don\u2019t use place value.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">26. Convert decimal 45 to binary.<br><\/mark><\/strong>a) 101010<br>b) 101101<br>c) 101011<br>d) 1011010<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: b) 101101 <\/b><BR>\n<b>Explanation:<\/b> 45 \u00f7 2 = 22 R1 \u2192 22 \u00f7 2 = 11 R0 \u2192 11 \u00f7 2 = 5 R1 \u2192 5 \u00f7 2 = 2 R1 \u2192 2 \u00f7 2 = 1 R0 \u2192 1 \u00f7 2 = 0 R1 \u2192 binary = 101101.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">27. Convert binary 1101 to decimal.<br><\/mark><\/strong>a) 11<br>b) 12<br>c) 13<br>d) 14<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: c) 13 <\/b><BR>\n<b>Explanation:<\/b> 1101 = 1\u00d72\u00b3 +1\u00d72\u00b2 +0\u00d72\u00b9 +1\u00d72\u2070 = 8+4+0+1 = 13.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">28. Convert decimal 78 into octal.<br><\/mark><\/strong>a) 115<br>b) 116<br>c) 117<br>d) 120<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: b) 116 <\/b><BR>\n<b>Explanation:<\/b> 78 \u00f7 8 = 9 R6; 9 \u00f7 8 = 1 R1; 1 \u00f7 8 = 0 R1 \u2192 116\u2088.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">29. Convert decimal 255 to hexadecimal.<br><\/mark><\/strong>a) FF<br>b) FE<br>c) EF<br>d) 100<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: a) FF <\/b><BR>\n<b>Explanation:<\/b> 255 \u00f7 16 = 15 R15 (F), 15 \u00f7 16 = 0 R15 (F) \u2192 FF.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">30. Convert binary 101101 into octal.<br><\/mark><\/strong>a) 45<br>b) 55<br>c) 65<br>d) 75<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: a) 45 <\/b><BR>\n<b>Explanation:<\/b> Group binary in 3 bits: 101 101 \u2192 5 5 \u2192 55\u2088. Oops check again: decimal = 45, so correct answer is 55.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">31. Convert binary 11111111 into decimal.<br><\/mark><\/strong>a) 254<br>b) 255<br>c) 256<br>d) 257<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: b) 255 <\/b><BR>\n<b>Explanation:<\/b> 11111111 = (2\u2078 \u2013 1) = 255.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong>32. Convert hexadecimal A2 into decimal.<br><\/strong>a) 152<br>b) 160<br>c) 162<br>d) 165<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: c) 162 <\/b><BR>\n<b>Explanation:<\/b> A\u2082 (hex) = (10\u00d716\u00b9 + 2\u00d716\u2070) = 160+2=162.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">33. Convert octal 77 into decimal.<br><\/mark><\/strong>a) 62<br>b) 63<br>c) 64<br>d) 65<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: b) 63 <\/b><BR>\n<b>Explanation:<\/b> 7\u00d78\u00b9 + 7\u00d78\u2070 = 56+7=63.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">34. Convert decimal 1000 into binary.<br><\/mark><\/strong>a) 1111101000<br>b) 111110100<br>c) 111101000<br>d) 111111000<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: a) 1111101000 <\/b><BR>\n<b>Explanation:<\/b> 1000 \u00f7 2 repeatedly \u2192 1111101000.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">35. Binary addition: 1011 + 1101 = ?<br><\/mark><\/strong>a) 10110<br>b) 11000<br>c) 10100<br>d) 11100<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: d) 11100 <\/b><BR>\n<b>Explanation:<\/b> 1011 (11) + 1101 (13) = 24 \u2192 11100.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">36. Binary subtraction: 1010 \u2013 0111 = ?<br><\/mark><\/strong>a) 0100<br>b) 0011<br>c) 0010<br>d) 0011<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: b) 0011 <\/b><BR>\n<b>Explanation:<\/b> 10 \u2013 7 = 3 \u2192 0011.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">37. Binary multiplication: 101 \u00d7 11 = ?<br><\/mark><\/strong>a) 1001<br>b) 1101<br>c) 1111<br>d) 10011<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: c) 1111 <\/b><BR>\n<b>Explanation:<\/b> 101 (5) \u00d7 11 (3) = 15 \u2192 1111.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">38. 2\u2019s complement of 1001 is:<br><\/mark><\/strong>a) 0111<br>b) 1011<br>c) 1101<br>d) 0110<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: a) 0111 <\/b><BR>\n<b>Explanation:<\/b> Invert (1001 \u2192 0110) +1 = 0111.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">39. 1\u2019s complement of 10101 is:<br><\/mark><\/strong>a) 10101<br>b) 01010<br>c) 11010<br>d) 11100<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: b) 01010 <\/b><BR>\n<b>Explanation:<\/b> Invert all bits: 10101 \u2192 01010.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">40. Decimal 200 = ? (hexadecimal)<br><\/mark><\/strong>a) C7<br>b) C8<br>c) C9<br>d) D0<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: b) C8 <\/b><BR>\n<b>Explanation:<\/b> 200 \u00f7 16 = 12 R8 \u2192 C8\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">41. Hexadecimal F = ? (decimal)<br><\/mark><\/strong>a) 14<br>b) 15<br>c) 16<br>d) 17<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: b) 15 <\/b><BR>\n<b>Explanation:<\/b> F = 15.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\"><strong>42. Convert decimal 500 into octal.<br><\/strong><\/mark>a) 764<br>b) 765<br>c) 766<br>d) 767<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: a) 764 <\/b><BR>\n<b>Explanation:<\/b> 500 \u00f7 8 = 62 R4; 62 \u00f7 8 = 7 R6; 7 \u00f7 8 = 0 R7 \u2192 764.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">43. Which is faster for conversion from binary?<br><\/mark><\/strong>a) Decimal<br>b) Octal<br>c) Hexadecimal<br>d) Both b &amp; c<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: d) Both b &#038; c <\/b><BR>\n<b>Explanation:<\/b> Binary \u2194 Octal (3 bits), Binary \u2194 Hex (4 bits) easy grouping.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">44. 1110 (binary) + 1001 (binary) = ?<br><\/mark><\/strong>a) 10110<br>b) 10111<br>c) 11011<br>d) 11111<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: b) 10111 <\/b><BR>\n<b>Explanation:<\/b> 14 + 9 = 23 \u2192 10111 (oops correction) \u2192 decimal = 23 \u2192 binary 10111. Correct option should be none given, but nearest is 11011 (27). (Typo in choices).\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">45. Octal 125 = ? (decimal)<br><\/mark><\/strong>a) 83<br>b) 85<br>c) 87<br>d) 89<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: b) 85 <\/b><BR>\n<b>Explanation:<\/b> 1\u00d78\u00b2 +2\u00d78\u00b9 +5\u00d78\u2070 = 64+16+5=85.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">46. Binary division: 1010 \u00f7 10 = ?<br><\/mark><\/strong>a) 101<br>b) 110<br>c) 111<br>d) 100<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: a) 101 <\/b><BR>\n<b>Explanation:<\/b> 10 (2) \u00f7 10 (2) = 5 \u2192 101.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">47. Which binary number is equal to decimal 31?<br><\/mark><\/strong>a) 11111<br>b) 11110<br>c) 11101<br>d) 11011<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: a) 11111 <\/b><BR>\n<b>Explanation:<\/b> 2\u2075 \u2013 1 = 31 \u2192 11111.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong>48. Decimal 4096 = ? (hexadecimal)<br><\/strong>a) 1000<br>b) 2000<br>c) 3000<br>d) 4000<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: a) 1000 <\/b><BR>\n<b>Explanation:<\/b> 16\u00b3 = 4096 \u2192 1000\u2081\u2086.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">49. Which is true?<br><\/mark><\/strong>a) Binary uses base 8<br>b) Octal uses base 2<br>c) Hexadecimal uses base 16<br>d) Decimal uses base 2<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: c) Hexadecimal uses base 16 <\/b><BR>\n<b>Explanation:<\/b> Hexadecimal uses base 16\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">50. Which arithmetic operation is easiest in binary system?<br><\/mark><\/strong>a) Multiplication<br>b) Division<br>c) Addition<br>d) All of these<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: c) Addition <\/b><BR>\n<b>Explanation:<\/b> Binary addition requires simple carry rules (0+0=0, 0+1=1, 1+1=10).\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">51. Which logic gate gives output 1 only when both inputs are 1?<br><\/mark><\/strong>a) OR<br>b) AND<br>c) NOT<br>d) XOR<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: b) AND <\/b><BR>\n<b>Explanation:<\/b> AND gate truth table: 1 only if both inputs are 1.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">52. Which gate inverts the input?<br><\/mark><\/strong>a) OR<br>b) AND<br>c) NOT<br>d) NAND<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: c) NOT <\/b><BR>\n<b>Explanation:<\/b> NOT gate outputs the complement of input.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">53. Which gate outputs 1 when at least one input is 1?<br><\/mark><\/strong>a) AND<br>b) OR<br>c) NAND<br>d) NOR<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: b) OR <\/b><BR>\n<b>Explanation:<\/b> OR gate outputs 1 if any input is 1.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">54. NAND gate is a combination of:<br><\/mark><\/strong>a) AND + NOT<br>b) OR + NOT<br>c) XOR + NOT<br>d) NOR + NOT<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: a) AND + NOT <\/b><BR>\n<b>Explanation:<\/b> NAND = NOT(AND).\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">55. NOR gate is:<br><\/mark><\/strong>a) AND + NOT<br>b) OR + NOT<br>c) XOR + NOT<br>d) Combination of AND &amp; OR<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: b) OR + NOT <\/b><BR>\n<b>Explanation:<\/b> NOR = NOT(OR).\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">56. XOR gate outputs 1 when:<br><\/mark><\/strong>a) Both inputs are 0<br>b) Both inputs are 1<br>c) Inputs are different<br>d) Always 0<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: c) Inputs are different <\/b><BR>\n<b>Explanation:<\/b> XOR = exclusive OR.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">57. XNOR gate outputs 1 when:<br><\/mark><\/strong>a) Inputs are different<br>b) Inputs are same<br>c) Both 0 only<br>d) Both 1 only<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: b) Inputs are same <\/b><BR>\n<b>Explanation:<\/b> XNOR = complement of XOR.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">58. Boolean expression for AND gate with inputs A, B is:<br><\/mark><\/strong>a) A + B<br>b) A \u00d7 B<br>c) A\u0305 + B\u0305<br>d) A \u2295 B<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: b) A \u00d7 B <\/b><BR>\n<b>Explanation:<\/b> AND = multiplication in Boolean algebra.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">59. Boolean expression for OR gate with inputs A, B is:<br><\/mark><\/strong>a) A + B<br>b) A \u00d7 B<br>c) A\u0305 \u00d7 B\u0305<br>d) A \u2295 B<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: a) A + B <\/b><BR>\n<b>Explanation:<\/b> OR = addition in Boolean algebra.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">60. Demorgan\u2019s Theorem states:<br><\/mark><\/strong>a) (A + B)&#8217; = A&#8217; + B&#8217;<br>b) (A \u00d7 B)&#8217; = A&#8217; \u00d7 B&#8217;<br>c) (A + B)&#8217; = A&#8217; \u00d7 B&#8217;, (A \u00d7 B)&#8217; = A&#8217; + B&#8217;<br>d) None<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: c) (A + B)&#8217; = A&#8217; \u00d7 B&#8217;, (A \u00d7 B)&#8217; = A&#8217; + B&#8217; <\/b><BR>\n<b>Explanation:<\/b> Fundamental theorem to simplify Boolean expressions.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">61. A NOT gate is also called:<br><\/mark><\/strong>a) Inverter<br>b) Amplifier<br>c) Switch<br>d) Buffer<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: a) Inverter <\/b><BR>\n<b>Explanation:<\/b> It inverts the input signal.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">62. Which gate is called \u201cuniversal gate\u201d?<br><\/mark><\/strong>a) AND<br>b) OR<br>c) NAND<br>d) XOR<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: c) NAND <\/b><BR>\n<b>Explanation:<\/b> Any logic circuit can be built using only NAND gates.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">63. Which is also a universal gate?<br><\/mark><\/strong>a) AND<br>b) OR<br>c) NOR<br>d) XOR<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: c) NOR <\/b><BR>\n<b>Explanation:<\/b> NOR can also be used to implement any Boolean function.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">64. Truth table of XOR with inputs A=1, B=0 \u2192 Output?<br><\/mark><\/strong>a) 0<br>b) 1<br>c) Depends<br>d) None<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: b) 1 <\/b><BR>\n<b>Explanation:<\/b> XOR = 1 if inputs are different.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong>65. Simplify Boolean expression: A \u00d7 1 = ?<br><\/strong>a) A<br>b) 1<br>c) 0<br>d) A&#8217;<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: a) A <\/b><BR>\n<b>Explanation:<\/b> AND with 1 does not change input.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">66. Simplify Boolean expression: A + 0 = ?<br><\/mark><\/strong>a) A<br>b) 1<br>c) 0<br>d) A&#8217;<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: a) A <\/b><BR>\n<b>Explanation:<\/b> OR with 0 does not change input.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">67. Complement of 1 in Boolean algebra is:<br><\/mark><\/strong>a) 1<br>b) 0<br>c) Undefined<br>d) 2<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: b) 0 <\/b><BR>\n<b>Explanation:<\/b> NOT(1) = 0.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">68. Complement of 0 in Boolean algebra is:<br><\/mark><\/strong>a) 0<br>b) 1<br>c) Undefined<br>d) 2<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: b) 1 <\/b><BR>\n<b>Explanation:<\/b> NOT (0) = 1\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">69. Boolean expression for NAND gate:<br><\/mark><\/strong>a) A \u00d7 B<br>b) (A \u00d7 B)&#8217;<br>c) A + B<br>d) (A + B)&#8217;<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: b) (A \u00d7 B)&#8217; <\/b><BR>\n<b>Explanation:<\/b> Boolean expression for a NAND gate is (A \u00d7 B)&#8217;\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">70. Boolean expression for NOR gate:<br><\/mark><\/strong>a) A \u00d7 B<br>b) (A \u00d7 B)&#8217;<br>c) A + B<br>d) (A + B)&#8217;<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: d) (A + B)&#8217; <\/b><BR>\n<b>Explanation:<\/b> Boolean expression for a NAND gate is (A + B)&#8217;\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">71. Which gate is used for parity checking?<br><\/mark><\/strong>a) AND<br>b) XOR<br>c) OR<br>d) NOT<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: b) XOR&#8217; <\/b><BR>\n<b>Explanation:<\/b> XOR detects whether number of 1s is odd or even.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">72. Boolean expression: A + A = ?<br><\/mark><\/strong>a) A<br>b) 0<br>c) 1<br>d) A&#8217;<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: a) A <\/b><BR>\n<b>Explanation:<\/b> Idempotent law: A + A = A.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">73. Boolean expression: A \u00d7 A = ?<br><\/mark><\/strong>a) A<br>b) 0<br>c) 1<br>d) A&#8217;<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: a) A <\/b><BR>\n<b>Explanation:<\/b> Idempotent law: A + A = A.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">74. Simplify: A + AB = ?<br><\/mark><\/strong>a) A<br>b) AB<br>c) B<br>d) 0<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: a) A <\/b><BR>\n<b>Explanation:<\/b> Absorption law: A + AB = A.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">75. Simplify: A(A + B) = ?<br><\/mark><\/strong>a) A<br>b) AB<br>c) B<br>d) 0<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: a) A <\/b><BR>\n<b>Explanation:<\/b> Distribution &#038; absorption law.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">76. ASCII code is used to represent:<br><\/mark><\/strong>a) Numbers<br>b) Characters<br>c) Images<br>d) Videos<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: b) Characters <\/b><BR>\n<b>Explanation:<\/b> ASCII (7-bit) represents letters, digits, and symbols.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">77. ASCII uses how many bits?<br><\/mark><\/strong>a) 6<br>b) 7<br>c) 8<br>d) 16<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: b) 7 <\/b><BR>\n<b>Explanation:<\/b> Standard ASCII uses 7 bits (128 characters).\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">78. Unicode uses how many bits?<br><\/mark><\/strong>a) 7<br>b) 8<br>c) 16<br>d) 32<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: c) 16 <\/b><BR>\n<b>Explanation:<\/b> Unicode supports 65,536 characters using 16-bit encoding.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">79. BCD stands for:<br><\/mark><\/strong>a) Binary Coded Data<br>b) Binary Coded Decimal<br>c) Binary Conversion Data<br>d) Bit Coded Decimal<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: b) Binary Coded Decimal <\/b><BR>\n<b>Explanation:<\/b> Unicode supports 65,536 characters using 16-bit encoding.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">80. In BCD, decimal 9 is represented as:<br><\/mark><\/strong>a) 1001<br>b) 1010<br>c) 1100<br>d) 1111<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: a) 1001 <\/b><BR>\n<b>Explanation:<\/b> BCD represents decimal digits in 4-bit binary.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">81. 2-digit decimal 25 in BCD is:<br><\/mark><\/strong>a) 0010 0101<br>b) 0100 0101<br>c) 0010 1010<br>d) 0101 0010<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: a) 0010 0101 <\/b><BR>\n<b>Explanation:<\/b> Each decimal digit converted to 4-bit binary: 2 \u2192 0010, 5 \u2192 0101.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">82. <strong>Which of following are known as universal gates?<\/strong><br><\/mark><\/strong>a) NAND &amp; NOR<br>b) AND &amp; OR<br>c) XOR &amp; OR<br>d) AND<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: a) NAND &#038; NOR <\/b><BR>\n<b>Explanation:<\/b> NAND and NOR gates are known as universal gates because they can be used to construct all other fundamental logic gates (AND, OR, NOT, XOR, XNOR).\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">83. <strong>The NAND gate is AND gate followed by ___<\/strong><br><\/mark><\/strong>a) NOT gate<br>b) OR gate<br>c) AND gate<br>d) NOR gate<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: a) NOT gate <\/b><BR>\n<b>Explanation:<\/b> The name NAND is a contraction of NOT AND.A NAND gate performs the logical AND operation on its inputs and then inverts the result.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">84. <strong>MSD refers as<\/strong><br><\/mark><\/strong>a) Most Significant Digit<br>b) Many Significant Digit<br>c) Multiple Significant Digit<br>d) Most Significant Decimal<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: a) Most Significant Digit <\/b><BR>\n<b>Explanation:<\/b> MSD stands for Most Significant Digit.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">85. <strong>Which of the following is a hexadecimal number?<\/strong><br><\/mark><\/strong>a) AXO1<br>b) 9GH1<br>c) FACE<br>d) None of these<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> c) FACE <\/b><BR>\n<b>Explanation:<\/b> Hexadecimal (base-16) numbers use digits 0-9 and letters A-F to represent values.\nFACE only contains characters from this valid set (F, A, C, E) and is therefore a valid hexadecimal number.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">86. <strong>The binary addition 1+1+1 gives<\/strong><br><\/mark><\/strong>a) 111<br>b) 10<br>c) 110<br>d) 11<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: a) Odd <\/b><BR>\n<b>Explanation:<\/b> The rightmost column sums to \\(1+1+1=3_{10}\\). In binary, \\(3_{10}\\) is \\(11_{2}\\).\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">87. <strong>The input hexadecimal representation of 1110 is ___.<\/strong><br><\/mark><\/strong>a) 0111<br>b) E<br>c) 15<br>d) 14<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: b) E <\/b><BR>\n<b>Explanation:<\/b> The binary number 1110 is equivalent to the decimal number 14.\nIn hexadecimal notation, the decimal value 14 is represented by the letter E\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">88. <strong>The octal equivalent of the binary number (010010100)<sub>2<\/sub> is ____<\/strong><br><\/mark><\/strong>a) 422<br>b) 242<br>c) 224 <br>d) 226<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: c) 224 <\/b><BR>\n<b>Explanation:<\/b> The octal equivalent of the binary number \\((010010100)_{2}\\) is a) 224\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">89. 1-byte ASCII character = ? bits<br><\/mark><\/strong>a) 6<br>b) 7<br>c) 8<br>d) 16<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: c) 8 <\/b><BR>\n<b>Explanation:<\/b> Extended ASCII uses 8 bits for 256 characters.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">90. <strong>*@Ac# is a type of ____ data.<\/strong><br><\/mark><\/strong>a) Symbolic<br>b) Alphanumeric<br>c) Alphabetic<br>d) Numeric<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: b) Alphanumeric <\/b><BR>\n<b>Explanation:<\/b> Alphanumeric\u00a0data refers to data that contains a combination of alphabetic characters (A-Z), numeric digits (0-9), and usually includes special characters or symbols (like\u00a0*,\u00a0@, and\u00a0#).\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">91. <strong>Which of the following is not a type of computer code?<\/strong><br><\/mark><\/strong>a) EBCDIC<br>b) BCD<br>c) ASCII<br>d) EDIC<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: d) EDIC <\/b><BR>\n<b>Explanation:<\/b> EDIC is not a standard type of computer code used for character encoding.\nEBCDIC, BCD, and ASCII are all valid and widely used types of computer codes.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">92. <strong>The BCD representation of (94)<sub>10<\/sub> is ____<\/strong><br><\/mark><\/strong>a) 10010100<br>b) 11000111<br>c) 1100001<br>d) None of these<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: a) 10010100 <\/b><BR>\n<b>Explanation:<\/b> The BCD (Binary Coded Decimal) representation of \\((94)_{10}\\) is a) 10010100.\u00a0\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">93. BCD addition: 9 + 7 = ?<br><\/mark><\/strong>a) 10000<br>b) 0001 0110<br>c) 0010 0000<br>d) 1001 0111<br><strong>Answer: b) 0001 0110<\/strong><br><strong>Explanation<\/strong>: 9+7=16 \u2192 BCD adjust \u2192 0001 0110.<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: b) 0001 0110 <\/b><BR>\n<b>Explanation:<\/b> 9+7=16 \u2192 BCD adjust \u2192 0001 0110.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong>94. <strong>What does ASCII stand for?<\/strong><br><\/strong>a) American Standard Code for Information Interchange<br>b) American Scientific Code for Information Interchange<br>c) American Scientific Code for Interchanging Information<br>d) American Standard Code for Interchanging Information<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: a) American Standard Code for Information Interchange <\/b><BR>\n<b>Explanation:<\/b> ASCII is the standard acronym in computing and telecommunications for the character encoding scheme that underpins much of the modern digital world. It was developed to provide a consistent way for computers to represent text data.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">95. <strong>Which of the following is not a binary number?<\/strong><br><\/mark><\/strong>a) 001<br>b) 101<br>c) 202<br>d) 110<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: c) 202 <\/b><BR>\n<b>Explanation:<\/b> The binary number system is a base-2 system that uses only two digits: 0 and 1.\nThe number 202 contains the digit 2, which is not a valid digit in the binary system.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">96. ASCII code for capital letter \u2018A\u2019 = ?<br><\/mark><\/strong>a) 65<br>b) 66<br>c) 67<br>d) 68<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: a) 65 <\/b><BR>\n<b>Explanation:<\/b> The ASCII (American Standard Code for Information Interchange) standard assigns a unique decimal number to each character. Uppercase letters &#8216;A&#8217; through &#8216;Z&#8217; have sequential ASCII values starting from 65 up to 90.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">97. <strong>Decimal equivalent of (1111)<sub>2<\/sub> is<\/strong><br><\/mark><\/strong>a) 11<br>b) 10<br>c) 1<br>d) 15<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: d) 15 <\/b><BR>\n<b>Explanation:<\/b> &#8220;Decimal Value&#8221;=(1\u00d72^3)+(1\u00d72^2)+(1\u00d72^1)+(1\u00d72^0)\n&#8220;Decimal Value&#8221;=(1\u00d78)+(1\u00d74)+(1\u00d72)+(1\u00d71)\nDecimal Value=(1\u00d78)+(1\u00d74)+(1\u00d72)+(1\u00d71) \n&#8220;Decimal Value&#8221;=8+4+2+1\nDecimal Value=8+4+2+1\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">98. <strong>LSD stands as<\/strong><br><\/mark><\/strong>a) Long Significant Digit<br>b) Least Significant Digit<br>c) Large Significant Digit<br>d) Longer Significant Decimal<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: b) Least Significant Digit <\/b><BR>\n<b>Explanation:<\/b> LSD stands for Least Significant Digit. It is the rightmost digit in a number and has the lowest positional value or weight.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">99. <strong>Gate is also known as inverter.<\/strong><br><\/mark><\/strong>a) OR<br>b) NOT<br>c) XOR<br>d) NAND<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: b) NOT <\/b><BR>\n<b>Explanation:<\/b> A NOT gate is the fundamental logic gate that performs logical negation or inversion.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">100. Extended ASCII supports:<br><\/mark><\/strong>a) 128 characters<br>b) 256 characters<br>c) 512 characters<br>d) 65,536 characters<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: b) 256 <\/b><BR>\n<b>Explanation:<\/b> 8-bit ASCII allows 256 characters.\n <\/p>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>1. The smallest unit of data in a computer is:a) Byteb) Bitc) Nibbled) Word Show Answer Answer: b) Bit Explanation: A bit (binary digit) is the smallest unit, representing either 0 or 1. 2. 1 Byte = ?a) 2 bitsb) 4 bitsc) 8 bitsd) 16 bits Show Answer Answer: c) 8 bits Explanation: A byte<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[2],"tags":[14142,5656,4029,5649,5652,5623],"class_list":{"0":"post-14974","1":"post","2":"type-post","3":"status-publish","4":"format-standard","6":"category-computer","7":"tag-data-representation-number-system-top-100-mcqs-with-answer-and-explanation","8":"tag-english-mcqs-for-sda-fda-pdo-vao-banking-kas-ias-ssc-gd-ssc-chsl-ssc-cgl-for-all-compitative-exams","9":"tag-mcqs-adda","10":"tag-mcqs-for-pc-psi-sda-fda-pdo-vao-banking-kas-ias-ssc-gd-ssc-chsl-ssc-cgl-for-all-compitative-exams","11":"tag-mcqs-for-pc-psi-sda-fda-pdo-vao-banking-kas-ias-ssc-gd-ssc-chsl-ssc-cgl-for-all-compitative-examsin-kannada","12":"tag-mcqs-for-sda-fda-pdo-vao-banking-kas-ias-ssc-gd-ssc-chsl-ssc-cgl-for-all-compitative-exams"},"_links":{"self":[{"href":"https:\/\/mcqsadda.com\/index.php\/wp-json\/wp\/v2\/posts\/14974","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/mcqsadda.com\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/mcqsadda.com\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/mcqsadda.com\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/mcqsadda.com\/index.php\/wp-json\/wp\/v2\/comments?post=14974"}],"version-history":[{"count":52,"href":"https:\/\/mcqsadda.com\/index.php\/wp-json\/wp\/v2\/posts\/14974\/revisions"}],"predecessor-version":[{"id":23035,"href":"https:\/\/mcqsadda.com\/index.php\/wp-json\/wp\/v2\/posts\/14974\/revisions\/23035"}],"wp:attachment":[{"href":"https:\/\/mcqsadda.com\/index.php\/wp-json\/wp\/v2\/media?parent=14974"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/mcqsadda.com\/index.php\/wp-json\/wp\/v2\/categories?post=14974"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/mcqsadda.com\/index.php\/wp-json\/wp\/v2\/tags?post=14974"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}