100+ MCQ'S ON NUMBERS WITH ANSWERS
1. Which of the following is a prime number?
a) 12
b) 17
c) 28
d) 39
**Answer: b) 17**
2. What is the smallest prime number?
a) 0
b) 1
c) 2
d) 3
**Answer: c) 2**
3. What is the sum of the first 10 natural numbers?
a) 45
b) 55
c) 50
d) 60
**Answer: a) 45**
4. Which of the following is a composite number?
a) 5
b) 7
c) 9
d) 11
**Answer: c) 9**
5. What is the unit digit of 237^2?
a) 1
b) 3
c) 7
d) 9
**Answer: b) 3**
6. Which is the largest two-digit prime number?
a) 89
b) 97
c) 101
d) 103
**Answer: b) 97**
7. What is the least common multiple of 6 and 8?
a) 24
b) 12
c) 48
d) 36
**Answer: a) 24**
8. What is the remainder when 482 is divided by 9?
a) 3
b) 4
c) 5
d) 6
**Answer: b) 4**
9. Which of the following is a perfect square?
a) 36
b) 45
c) 51
d) 64
**Answer: a) 36**
10. What is the value of (−3)^4?
a) −12
b) 81
c) −81
d) 64
**Answer: b) 81**
11. What is the prime factorization of 60?
a) 2^3 × 3^2 × 5
b) 2^2 × 3 × 5
c) 2^2 × 3^2 × 5
d) 2^4 × 3 × 5
**Answer: b) 2^2 × 3 × 5**
12. What is the sum of all even numbers between 10 and 20?
a) 90
b) 100
c) 110
d) 120
**Answer: b) 100**
13. What is the next prime number after 29?
a) 31
b) 32
c) 33
d) 30
**Answer: a) 31**
14. If a number is divisible by both 2 and 3, which other number is it also divisible by?
a) 4
b) 5
c) 6
d) 7
**Answer: c) 6**
15. What is the value of 7! (7 factorial)?
a) 42
b) 49
c) 720
d) 5040
**Answer: c) 720**
16. What is the square root of 144?
a) 10
b) 11
c) 12
d) 13
**Answer: c) 12**
17. If a number is divisible by 9, which of the following must be true?
a) The number is odd.
b) The sum of its digits is a multiple of 3.
c) The number is prime.
d) The number is a perfect square.
**Answer: b) The sum of its digits is a multiple of 3.**
18. Which is the smallest prime number with two digits?
a) 11
b) 13
c) 19
d) 17
**Answer: a) 11**
19. What is the product of the first 5 prime numbers?
a) 60
b) 100
c) 210
d) 120
**Answer: d) 120**
20. What is the remainder when 125 is divided by 7?
a) 1
b) 2
c) 3
d) 4
**Answer: b) 2**
21. What is the greatest common divisor of 24 and 36?
a) 6
b) 8
c) 12
d) 18
**Answer: c) 12**
22. Which of the following is a perfect cube?
a) 64
b) 81
c) 100
d) 125
**Answer: b) 81**
23. What is the smallest natural number that leaves a remainder of 1 when divided by 5, 6, and 7?
a) 41
b) 71
c) 91
d) 121
**Answer: c) 91**
24. What is the sum of all the odd numbers between 40 and 50?
a) 225
b) 240
c) 245
d) 250
**Answer: c) 245**
25. What is the next perfect square after 100?
a) 121
b) 144
c) 169
d) 110
**Answer: a) 121**
26. What is the prime factorization of 98?
a) 2 × 7^2
b) 2 × 7 × 7
c) 2 × 3 × 7
d) 2^2 × 7^2
**Answer: b) 2 × 7 × 7**
27. What is the largest prime factor of 56?
a) 2
b) 3
c) 5
d) 7
**Answer: d) 7**
28. What is the value of 0! (0 factorial)?
a) 0
b) 1
c) Undefined
d) 2
**Answer: b) 1**
29. Which of the following numbers is not a perfect square?
a) 49
b) 64
c) 81
d) 98
**Answer: d) 98**
30. What is the least common multiple of 12, 18, and 24?
a) 72
b) 108
c) 216
d) 36
**
Answer: a) 72**
31. Which of the following is a prime number?
a) 27
b) 31
c) 49
d) 50
**Answer: b) 31**
32. What is the remainder when 243 is divided by 8?
a) 3
b) 4
c) 5
d) 6
**Answer: b) 4**
33. What is the product of the first 6 natural numbers?
a) 120
b) 150
c) 180
d) 210
**Answer: a) 120**
34. What is the sum of the first 15 odd numbers?
a) 210
b) 225
c) 240
d) 255
**Answer: b) 225**
35. Which of the following is a perfect square?
a) 52
b) 81
c) 104
d) 125
**Answer: b) 81**
36. What is the smallest three-digit prime number?
a) 101
b) 103
c) 107
d) 109
**Answer: a) 101**
37. What is the value of 10^3 + 5^2?
a) 105
b) 110
c) 125
d) 1005
**Answer: d) 1005**
38. Which of the following numbers is divisible by both 4 and 6?
a) 16
b) 20
c) 24
d) 30
**Answer: c) 24**
39. What is the next prime number after 37?
a) 39
b) 41
c) 43
d) 45
**Answer: b) 41**
40. What is the sum of the squares of the first 5 natural numbers?
a) 30
b) 55
c) 50
d) 65
**Answer: b) 55**
41. What is the remainder when 578 is divided by 11?
a) 0
b) 1
c) 2
d) 3
**Answer: a) 0**
42. What is the greatest common divisor of 15 and 25?
a) 5
b) 10
c) 15
d) 25
**Answer: a) 5**
43. Which of the following is a prime number?
a) 40
b) 47
c) 54
d) 63
**Answer: b) 47**
44. What is the value of 2^5 × 2^3?
a) 64
b) 128
c) 256
d) 512
**Answer: c) 256**
45. Which of the following is a perfect square?
a) 18
b) 25
c) 32
d) 49
**Answer: b) 25**
46. What is the smallest prime number greater than 50?
a) 51
b) 53
c) 55
d) 57
**Answer: b) 53**
47. What is the next triangular number after 21?
a) 28
b) 30
c) 31
d) 33
**Answer: a) 28**
48. What is the value of 9! (9 factorial)?
a) 324
b) 362,880
c) 40320
d) 45,360
**Answer: b) 362,880**
49. Which of the following is not a prime number?
a) 59
b) 61
c) 63
d) 67
**Answer: c) 63**
50. What is the sum of all the even numbers between 30 and 40?
a) 180
b) 190
c) 200
d) 210
**Answer: c) 200**
51. What is the value of 4^0?
a) 0
b) 1
c) 2
d) 4
**Answer: b) 1**
52. What is the remainder when 1387 is divided by 11?
a) 0
b) 1
c) 2
d) 3
**Answer: b) 1**
53. Which of the following numbers is a multiple of 9?
a) 45
b) 53
c) 64
d) 72
**Answer: a) 45**
54. What is the prime factorization of 72?
a) 2^3 × 3^3
b) 2^2 × 3^2
c) 2 × 3 × 6
d) 2^4 × 3^2
**Answer: d) 2^4 × 3^2**
55. What is the sum of the cubes of the first 4 natural numbers?
a) 100
b) 98
c) 110
d) 90
**Answer: a) 100**
56. Which of the following is a perfect cube?
a) 27
b) 32
c) 36
d) 45
**Answer: a) 27**
57. What is the smallest four-digit prime number?
a) 1001
b) 1007
c) 1013
d) 1031
**Answer: c) 1013**
58. What is the value of 11^2?
a) 111
b) 121
c) 132
d) 144
**Answer: b) 121**
59. Which of the following is a composite number?
a) 61
b) 67
c) 71
d) 77
**Answer: d) 77**
60. What is the least common multiple of 4, 5, and 6?
a) 15
b) 20
c) 30
d) 40
**Answer: c) 30**
61. What is the remainder when 5679 is divided by 9?
a) 0
b) 1
c) 2
d) 3
**Answer: a) 0**
62. What is the sum of the first 20 natural numbers?
a) 190
b) 200
c)
210
d) 220
**Answer: b) 200**
63. Which of the following is a prime number?
a) 70
b) 73
c) 75
d) 77
**Answer: b) 73**
64. What is the product of the first 7 prime numbers?
a) 945
b) 1040
c) 1230
d) 2100
**Answer: a) 945**
65. What is the remainder when 1298 is divided by 7?
a) 0
b) 1
c) 2
d) 3
**Answer: c) 2**
66. Which of the following is a divisor of both 20 and 30?
a) 4
b) 5
c) 10
d) 15
**Answer: b) 5**
67. What is the next prime number after 59?
a) 61
b) 63
c) 65
d) 67
**Answer: a) 61**
68. What is the sum of the first 25 even numbers?
a) 600
b) 650
c) 700
d) 750
**Answer: c) 700**
69. Which of the following is a perfect square?
a) 82
b) 100
c) 112
d) 121
**Answer: b) 100**
70. What is the smallest two-digit composite number?
a) 10
b) 15
c) 21
d) 33
**Answer: c) 21**
71. What is the value of 5^4?
a) 100
b) 125
c) 150
d) 625
**Answer: d) 625**
72. Which of the following numbers is a multiple of both 3 and 4?
a) 12
b) 15
c) 18
d) 21
**Answer: a) 12**
73. What is the greatest common divisor of 20 and 50?
a) 10
b) 20
c) 30
d) 40
**Answer: a) 10**
74. Which of the following is a prime number?
a) 86
b) 89
c) 92
d) 95
**Answer: b) 89**
75. What is the value of 3^6?
a) 27
b) 81
c) 243
d) 729
**Answer: d) 729**
76. What is the sum of all the odd numbers between 60 and 70?
a) 305
b) 315
c) 325
d) 335
**Answer: c) 325**
77. Which of the following is a perfect cube?
a) 216
b) 225
c) 234
d) 243
**Answer: a) 216**
78. What is the largest prime factor of 90?
a) 2
b) 3
c) 5
d) 7
**Answer: c) 5**
79. What is the next triangular number after 28?
a) 31
b) 33
c) 36
d) 40
**Answer: a) 31**
80. What is the value of 8! (8 factorial)?
a) 384
b) 40320
c) 4480
d) 4032
**Answer: b) 40320**
81. Which of the following is a prime number?
a) 99
b) 101
c) 103
d) 105
**Answer: b) 101**
82. What is the remainder when 743 is divided by 13?
a) 0
b) 1
c) 2
d) 3
**Answer: c) 2**
83. What is the sum of the cubes of the first 3 natural numbers?
a) 27
b) 36
c) 45
d) 54
**Answer: a) 27**
84. Which of the following is a perfect square?
a) 56
b) 64
c) 72
d) 81
**Answer: b) 64**
85. What is the largest three-digit prime number?
a) 997
b) 1007
c) 1013
d) 1021
**Answer: a) 997**
86. What is the value of 7^3?
a) 147
b) 343
c) 441
d) 729
**Answer: b) 343**
87. Which of the following numbers is not a multiple of 7?
a) 21
b) 28
c) 35
d) 42
**Answer: d) 42**
88. What is the next prime number after 71?
a) 73
b) 75
c) 77
d) 79
**Answer: a) 73**
89. What is the sum of all the even numbers between 50 and 60?
a) 250
b) 260
c) 270
d) 280
**Answer: b) 260**
90. Which of the following is a perfect square?
a) 98
b) 100
c) 108
d) 121
**Answer: b) 100**
91. What is the smallest four-digit composite number?
a) 1001
b) 1007
c) 1013
d) 1031
**Answer: b) 1007**
92. What is the value of 12^2?
a) 132
b) 144
c) 156
d) 169
**Answer: b) 144**
93. Which of the following is a prime number?
a) 80
b) 83
c) 85
d) 87
**Answer: b) 83**
94. What is the product of the first 8 prime numbers?
a) 720
b) 840
c) 960
d) 1080
**Answer: a) 720**
95. What is the remainder when 1347 is divided by 6?
a) 0
b)
1
c) 2
d) 3
**Answer: c) 2**
96. Which of the following numbers is a divisor of both 15 and 25?
a) 4
b) 5
c) 10
d) 20
**Answer: b) 5**
97. What is the next prime number after 61?
a) 63
b) 65
c) 67
d) 69
**Answer: c) 67**
98. What is the sum of the first 30 natural numbers?
a) 420
b) 435
c) 450
d) 465
**Answer: c) 450**
99. Which of the following is a perfect cube?
a) 64
b) 81
c) 98
d) 125
**Answer: b) 81**
100. What is the smallest two-digit odd number?
a) 10
b) 11
c) 12
d) 13
**Answer: b) 11**
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