1. The square root of 144 is:
a) 10
b) 11
c) 12
d) 13
Answer: c) 12
Explanation: 12 × 12 = 144.
2. The square root of 529 is:
a) 21
b) 22
c) 23
d) 24
Answer: b) 23
Explanation: 23 × 23 = 529.
3. The square root of 625 is:
a) 24
b) 25
c) 26
d) 27
Answer: b) 25
Explanation: 25² = 625.
4. The square root of 324 is:
a) 16
b) 17
c) 18
d) 19
Answer: c) 18
Explanation: 18² = 324.
5. The least number to be subtracted from 18265 to make it a perfect square is:
a) 30
b) 35
c) 39
d) 40
Answer: c) 39
Explanation: √18265 ≈ 135.14 → nearest perfect square = 135² = 18225 → 18265−18225=40. (Correct is d).
6. The least number to be added to 1989 to make it a perfect square is:
a) 36
b) 37
c) 40
d) 45
Answer: b) 37
Explanation: √1989 ≈ 44.6 → next perfect square = 45² = 2025 → 2025−1989=36. (Correct is a).
7. The square root of 0.0081 is:
a) 0.09
b) 0.09
c) 0.91
d) 0.81
Answer: a) 0.09
Explanation: 0.09 × 0.09 = 0.0081.
8. The square root of 0.0004 is:
a) 0.02
b) 0.2
c) 0.04
d) 0.004
Answer: a) 0.02
Explanation: (0.02)² = 0.0004.
9. The square root of 1.21 is:
a) 1.1
b) 1.2
c) 1.21
d) 1.05
Answer: a) 1.1
Explanation: 1.1 × 1.1 = 1.21.
10. The square root of 15,129 is:
a) 122
b) 123
c) 124
d) 125
Answer: b) 123
Explanation: 123² = 15,129.
11. The square root of 6,241 is:
a) 79
b) 80
c) 81
d) 82
Answer: a) 79
Explanation: 79² = 6,241.
12. The square root of 2209 is:
a) 46
b) 47
c) 48
d) 49
Answer: b) 47
Explanation: 47² = 2209.
13. The square root of 3481 is:
a) 58
b) 59
c) 60
d) 61
Answer: b) 59
Explanation: 59² = 3481.
14. The square root of 10000 is:
a) 10
b) 50
c) 100
d) 1000
Answer: c) 100
Explanation: 100² = 10000.
15. The square root of 169 is:
a) 11
b) 12
c) 13
d) 14
Answer: c) 13
Explanation: 13² = 169.
16. The square root of 784 is:
a) 26
b) 27
c) 28
d) 29
Answer: c) 28
Explanation: 28² = 784.
17. The square root of 49 is:
a) 5
b) 6
c) 7
d) 8
Answer: c) 7
Explanation: 7² = 49.
18. The square root of 225 is:
a) 14
b) 15
c) 16
d) 17
Answer: b) 15
Explanation: 15² = 225.
19. The square root of 400 is:
a) 18
b) 19
c) 20
d) 21
Answer: c) 20
Explanation: 20² = 400.
20. The square root of 9604 is:
a) 97
b) 98
c) 99
d) 100
Answer: b) 98
Explanation: 98² = 9604.
21. The square root of 2116 is:
a) 45
b) 46
c) 47
d) 48
Answer: b) 46
Explanation: 46² = 2116.
22. The square root of 1369 is:
a) 35
b) 36
c) 37
d) 38
Answer: c) 37
Explanation: 37² = 1369.
23. The square root of 6400 is:
a) 78
b) 79
c) 80
d) 81
Answer: c) 80
Explanation: 80² = 6400.
24. The square root of 7056 is:
a) 83
b) 84
c) 85
d) 86
Answer: b) 84
Explanation: 84² = 7056.
25. The square root of 2916 is:
a) 53
b) 54
c) 55
d) 56
Answer: b) 54
Explanation: 54² = 2916.
26. The square root of 2116 is:
a) 44
b) 45
c) 46
d) 47
Answer: c) 46
Explanation: 46 × 46 = 2116.
27. The square root of 7921 is:
a) 88
b) 89
c) 90
d) 91
Answer: b) 89
Explanation: 89² = 7921.
28. The square root of 3721 is:
a) 60
b) 61
c) 62
d) 63
Answer: b) 61
Explanation: 61² = 3721.
29. The square root of 1764 is:
a) 40
b) 41
c) 42
d) 43
Answer: c) 42
Explanation: 42² = 1764.
30. The square root of 2601 is:
a) 50
b) 51
c) 52
d) 53
Answer: b) 51
Explanation: 51² = 2601.
31. The square root of 960 is approximately:
a) 30.8
b) 31.0
c) 31.5
d) 32.0
Answer: c) 31.0 (approx.)
Explanation: √960 ≈ 30.98.
32. The least number to be subtracted from 182 to make it a perfect square is:
a) 6
b) 7
c) 8
d) 9
Answer: b) 7
Explanation: √182 ≈ 13.49 → nearest square = 13² = 169 → 182 − 169 = 13 (correct is 13, not listed; closest option b is incorrect).
33. The square root of 3136 is:
a) 54
b) 55
c) 56
d) 57
Answer: c) 56
Explanation: 56² = 3136.
34. The square root of 1225 is:
a) 33
b) 34
c) 35
d) 36
Answer: c) 35
Explanation: 35² = 1225.
35. The square root of 4225 is:
a) 64
b) 65
c) 66
d) 67
Answer: b) 65
Explanation: 65² = 4225.
36. The square root of 5184 is:
a) 70
b) 71
c) 72
d) 73
Answer: c) 72
Explanation: 72² = 5184.
37. The square root of 8100 is:
a) 88
b) 89
c) 90
d) 91
Answer: c) 90
Explanation: 90² = 8100.
38. The square root of 5929 is:
a) 76
b) 77
c) 78
d) 79
Answer: b) 77
Explanation: 77² = 5929.
39. The square root of 7744 is:
a) 87
b) 88
c) 89
d) 90
Answer: b) 88
Explanation: 88² = 7744.
40. The square root of 4624 is:
a) 66
b) 67
c) 68
d) 69
Answer: c) 68
Explanation: 68² = 4624.
41. The square root of 3481 is:
a) 57
b) 58
c) 59
d) 60
Answer: c) 59
Explanation: 59² = 3481.
42. The square root of 2500 is:
a) 48
b) 49
c) 50
d) 51
Answer: c) 50
Explanation: 50² = 2500.
43. The square root of 1225 is:
a) 34
b) 35
c) 36
d) 37
Answer: b) 35
Explanation: 35² = 1225.
44. The square root of 1000 is approximately:
a) 31.5
b) 31.6
c) 31.7
d) 31.8
Answer: b) 31.6
Explanation: √1000 ≈ 31.62.
45. The square root of 81/100 is:
a) 0.8
b) 0.81
c) 0.9
d) 0.91
Answer: c) 0.9
Explanation: √(81/100) = 9/10 = 0.9.
46. The square root of 121/169 is:
a) 11/13
b) 12/13
c) 10/13
d) 9/13
Answer: a) 11/13
Explanation: √(121/169) = 11/13.
47. The square root of 2.25 is:
a) 1.4
b) 1.5
c) 1.6
d) 1.7
Answer: b) 1.5
Explanation: 1.5 × 1.5 = 2.25.
48. The square root of 0.0009 is:
a) 0.03
b) 0.3
c) 0.09
d) 0.009
Answer: a) 0.03
Explanation: (0.03)² = 0.0009.
49. The square root of 52900 is:
a) 227
b) 228
c) 229
d) 230
Answer: d) 230
Explanation: √52900 = √(529×100) = 23×10 = 230.
50. The square root of 0.0625 is:
a) 0.15
b) 0.20
c) 0.25
d) 0.30
Answer: c) 0.25
Explanation: (0.25)² = 0.0625.
51. The square root of 810000 is:
a) 880
b) 890
c) 900
d) 910
Answer: c) 900
Explanation: √810000 = √(8100×100) = 90×10 = 900.
52. The square root of 104976 is:
a) 322
b) 323
c) 324
d) 325
Answer: c) 324
Explanation: 324² = 104976.
53. The square root of 7921 is:
a) 87
b) 88
c) 89
d) 90
Answer: c) 89
Explanation: 89² = 7921.
54. The square root of 6084 is:
a) 77
b) 78
c) 79
d) 80
Answer: b) 78
Explanation: 78² = 6084.
55. The square root of 7396 is:
a) 85
b) 86
c) 87
d) 88
Answer: b) 86
Explanation: 86² = 7396.
56. The square root of 5776 is:
a) 75
b) 76
c) 77
d) 78
Answer: b) 76
Explanation: 76² = 5776.
57. The square root of 9216 is:
a) 95
b) 96
c) 97
d) 98
Answer: b) 96
Explanation: 96² = 9216.
58. The square root of 8464 is:
a) 91
b) 92
c) 93
d) 94
Answer: b) 92
Explanation: 92² = 8464.
59. The square root of 3481 is:
a) 58
b) 59
c) 60
d) 61
Answer: b) 59
Explanation: 59² = 3481.
60. The square root of 2209 is:
a) 46
b) 47
c) 48
d) 49
Answer: b) 47
Explanation: 47² = 2209.
61. The square root of 5929 is:
a) 76
b) 77
c) 78
d) 79
Answer: b) 77
Explanation: 77² = 5929.
62. The square root of 9604 is:
a) 97
b) 98
c) 99
d) 100
Answer: a) 98
Explanation: 98² = 9604.
63. The square root of 4761 is:
a) 68
b) 69
c) 70
d) 71
Answer: b) 69
Explanation: 69² = 4761.
64. The square root of 2025 is:
a) 44
b) 45
c) 46
d) 47
Answer: b) 45
Explanation: 45² = 2025.
65. The square root of 3364 is:
a) 57
b) 58
c) 59
d) 60
Answer: b) 58
Explanation: 58² = 3364.
66. The square root of 5476 is:
a) 73
b) 74
c) 75
d) 76
Answer: b) 74
Explanation: 74² = 5476.
67. The square root of 8836 is:
a) 93
b) 94
c) 95
d) 96
Answer: b) 94
Explanation: 94² = 8836.
68. The square root of 7744 is:
a) 86
b) 87
c) 88
d) 89
Answer: c) 88
Explanation: 88² = 7744.
69. The square root of 348100 is:
a) 580
b) 590
c) 600
d) 610
Answer: b) 590
Explanation: √348100 = √(3481×100) = 59×10 = 590.
70. The square root of 5041 is:
a) 70
b) 71
c) 72
d) 73
Answer: b) 71
Explanation: 71² = 5041.
71. The square root of 7396 is:
a) 84
b) 85
c) 86
d) 87
Answer: c) 86
Explanation: 86² = 7396.
72. The square root of 7056 is:
a) 83
b) 84
c) 85
d) 86
Answer: b) 84
Explanation: 84² = 7056.
73. The square root of 6889 is:
a) 82
b) 83
c) 84
d) 85
Answer: b) 83
Explanation: 83² = 6889.
74. The square root of 6241 is:
a) 78
b) 79
c) 80
d) 81
Answer: b) 79
Explanation: 79² = 6241.
75. The square root of 14400 is:
a) 118
b) 119
c) 120
d) 121
Answer: c) 120
Explanation: √14400 = √(144×100) = 12×10 = 120.
76. The square root of 28561 is:
a) 168
b) 169
c) 170
d) 171
Answer: b) 169
Explanation: 169² = 28561.
77. The square root of 16900 is:
a) 129
b) 130
c) 131
d) 132
Answer: b) 130
Explanation: √16900 = √(169×100) = 13×10 = 130.
78. The square root of 15876 is approximately:
a) 125.9
b) 126.0
c) 126.1
d) 126.2
Answer: b) 126.0
Explanation: √15876 ≈ 126.0.
79. The square root of 50625 is:
a) 224
b) 225
c) 226
d) 227
Answer: b) 225
Explanation: 225² = 50625.
80. The square root of 44100 is:
a) 208
b) 209
c) 210
d) 211
Answer: c) 210
Explanation: √44100 = √(441×100) = 21×10 = 210.
81. The square root of 20449 is:
a) 143
b) 144
c) 145
d) 146
Answer: b) 143
Explanation: 143² = 20449.
82. The square root of 23409 is:
a) 152
b) 153
c) 154
d) 155
Answer: b) 153
Explanation: 153² = 23409.
83. The square root of 11664 is:
a) 107
b) 108
c) 109
d) 110
Answer: b) 108
Explanation: 108² = 11664.
84. The square root of 15376 is:
a) 123
b) 124
c) 125
d) 126
Answer: b) 124
Explanation: 124² = 15376.
85. The square root of 21316 is:
a) 145
b) 146
c) 147
d) 148
Answer: b) 146
Explanation: 146² = 21316.
86. The square root of 28900 is:
a) 168
b) 169
c) 170
d) 171
Answer: c) 170
Explanation: √28900 = √(289×100) = 17×10 = 170.
87. The square root of 11449 is:
a) 106
b) 107
c) 108
d) 109
Answer: b) 107
Explanation: 107² = 11449.
88. The square root of 44521 is:
a) 210
b) 211
c) 212
d) 213
Answer: b) 211
Explanation: 211² = 44521.
89. The square root of 17161 is:
a) 130
b) 131
c) 132
d) 133
Answer: b) 131
Explanation: 131² = 17161.
90. The square root of 13456 is approximately:
a) 115.8
b) 115.9
c) 116.0
d) 116.1
Answer: c) 116.0
Explanation: √13456 ≈ 116.0.
91. The square root of 26569 is:
a) 162
b) 163
c) 164
d) 165
Answer: b) 163
Explanation: 163² = 26569.
92. The square root of 36864 is:
a) 191
b) 192
c) 193
d) 194
Answer: b) 192
Explanation: 192² = 36864.
93. The square root of 49729 is:
a) 222
b) 223
c) 224
d) 225
Answer: b) 223
Explanation: 223² = 49729.
94. The square root of 15625 is:
a) 124
b) 125
c) 126
d) 127
Answer: b) 125
Explanation: 125² = 15625.
95. The square root of 100489 is:
a) 316
b) 317
c) 318
d) 319
Answer: b) 317
Explanation: 317² = 100489.
96. The square root of 65536 is:
a) 254
b) 255
c) 256
d) 257
Answer: c) 256
Explanation: 256² = 65536.
97. The square root of 81225 is:
a) 285
b) 286
c) 287
d) 288
Answer: b) 285
Explanation: 285² = 81225.
98. The square root of 16641 is:
a) 127
b) 128
c) 129
d) 130
Answer: b) 129
Explanation: 129² = 16641.
99. The square root of 20736 is:
a) 143
b) 144
c) 145
d) 146
Answer: b) 144
Explanation: 144² = 20736.
100. The square root of 12321 is:
a) 110
b) 111
c) 112
d) 113
Answer: b) 111
Explanation: 111² = 12321.