# AP 8th Maths Mock Test 2021 For Chapter – 15 : ” Playing With Numbers ” Online Practice Test

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1. The product of even and odd number is
2. The sum of first three consecutive odd numbers is
3. For n = 3 , n3 - n represents an ............ number
4. If 2a = 3b = 7c = 5d = 210 then a + b + c + d is
5. The general formula of odd number is
6. The number of composite numbers less than 10 is
7. Which of the following are twin primes ?
8. Two numbers are said to be co-prime or relatively prime numbers if their H.C.F is
9. Prime numbers less than 100 are
10. If x = 7 , y = 5 , z = 3 then which of the following is true ?
11. Which of the following is divisible by 4 ?
12. Which of the following is divisible by 3 ?
13. If 'n' is odd then (20n + 17n) is divisible by
14. In the following addition the value of A is
15. The sum of cubes of three successive natural numbers is always divisible by
16. If the sum of two primes is 68 , then the numbers are
17. In the product of value of A is
18. If p = 5 and a = 2 then 'ap - a' is divisible by
19. The number divisible by 2 is
20. The number divisible by 3 is
21. The number divisible by 4 is
22. The number divisible by 6 is
23. The number divisible by 11 is
24. The number divisible by 9 is
25. The number of possible digits for x such that 123456x is divisible by 2 is
26. The values of letters x and y in the following are
27. The values of letters P and Q in the following are
28. Which number is different among the following ?
29. In the number 765 the face value of 6 is
30. In the number 786 place value of 7 is
31. Which of the following are not divisible by 10 ?
32. Numbers which have exactly two factors and itself are called
33. Which of the following are prime numbers ?
34. Two prime numbers whose difference is 2 are called
35. Which of the following are twin primes ?
36. Co-primes are also called as
37. Two numbers whose HCF is 1 is
38. Examples for co-primes are
39. Which of the following is not related to co-primes ?
40. There are ......... factors for 72
41. Find odd one based on divisibility rule of 2
42. If the sum of digits of number is multiple of 3 , then the number is divisible by
43. 456 is divisible by
44. Find odd one of divisibility rule of 4
45. Which of the following is not divisible by 4 ?
46. Which of the following are divisible by 5 ?
47. Which of the following are not divisible by 5 ?
48. Which of the following are divisible by 6 ?
49. Which of the following are not divisible by 6 ?
50. Which of the following are not divisible by 7 ?
51. Which of the following are divisible by 7 ?
52. If 4B 5 leaves remainder 1 , what might be the value of B ?
53. If 76C 5 leaves remainder 2 , what might be the value of C ?
54. If a number divisible by 10 then it also divisible by
55. In the division 56Z 10 leaves remainder 6 , what might be the value of Z ?
56. In the division 34A 5  what might be the value of A ?
57. Which of the following is not divisible by 10 ?
58. If a number is divisible by 5 , it is also divisible by ...........
59. If 345A7 is divisible by 3 , supply the missing digit in place of 'A'
60. If 2791A is divisible by 9 , supply the missing digit in place of 'A'
61. Numbers divisible by 2 , 3 , 5 , 9 and 10 also
62. 1A8 is a number divisible by 2 , what might be the value of A ?
63. 16A is a number divisible by 5 , what might be the value of A ?
64. 2P is number which is divisible by 2 and 3 , what is value of P ?
65. 54Z leaves remainder 2 when divided by 5 and leaves remainder 1 when divided by 3 , what is the value of Z ?
66. 27Q leaves remainder 3 when divided by 5 and leaves remainder 1 when divided by 2 , what is the remainder when divisible by 3 ?
67. Numbers related to 4 are
68. Which of the following are not related to 8 ?
69. Which of the following are not related to 7 ?
70. Which of the following are related to 11 ?
71. If number is divisible by 8 then it is also divisible by
72. A 3-digit number 4A3 is added to another 3-digit number 984 to give 4 digit number 13B7 which is divisible by 11 then find (A + B)
73. 864 is divisible by
74. 756 is divisible by
75. 322 is divisible by
76. If A679B is a 5-digit number is divisible by 72 then find A and B ?
77. 7A - 16 = A9 then A =
78. 107 - A9 = A then the value of A is
79. A36 - 1A4 = 742 then A =
80. 73 K8 = 9L then the values of K and L are
81. MN 3 = MN then the values of M and N are
82. If AAB 999 = ABC 123 find the values of A , B and C
83. Find the sum of integers which are divisible by 5 from 1 to 100
84. Find the sum of integers which are divisible by 2 from 11 to 50
85. Find the sum of integers which are divisible by 2 and 3 from 1 to 50
86. n3 - n is divisible by
87. 111 + 211 + 311 + 411 is divisible by
88. Find the sum of integers from 1 to 100 which are divisible by 2 or 5
89. Find the sum of integers from 11 to 1000 which are divisible by 3
90. If sum of two prime numbers is 36 then the two numbers are
91. ...... is the smallest number of given number
92. Set of factors number is
93. The set of multiples of number
94. Prime numbers less than 10 are
95. Prime numbers less than 20 are
96. The place value of 7 in 34789
97. Face value of 4 in 87654 is
98. Factors for prime numbers are
99. Common factor for all numbers
100. The value of 100 is