MCQ Questions for Class 8 Maths: Ch 16 Playing with Numbers

MCQ Questions for Class 8 Maths: Ch 16 Playing with Numbers

1. The generalised form of the number 33 is
(a) 10 × 3 + 3
(b) 10 × 3
(c) 3 + 3
(d) 3 × 3 + 3
► (a) 10 × 3 + 3

2. Which of the following statements is false?
(a) If a number is divisible by 8, it must be divisible by 4.
(b) If a number is divisible by both 9 and 10, it is divisible by 90.
(c) The sum of two consecutive odd numbers is always divisible by 4.
(d) If a number is not divisible by both 3 and 4, it is divisible by 12.
► (d) If a number is not divisible by both 3 and 4, it is divisible by 12.

3. Which of the given numbers is composite?
(a) 137
(b) 147
(c) 157
(d) 167
► (b) 147

4. If the division N ÷ 5 leaves a remainder of 0, what might be the one’s digit of N?
(a) 5
(b) Either 5 or 0
(c) 2
(d) 7
► (b) Either 5 or 0

5. Write in generalised form: 25
(a) 10 × 5 + 2
(b) 10 × 5 + 3
(c) 10 × 2 + 5
(d) 10 × 3 + 5
► (c) 10 × 2 + 5

6. Which of these numbers is divisible by 6?
(a) 5782
(b) 2666
(c) 6053
(d) 8964
► (d) 8964

7. By which of the following number 9042 is not divisible? 2, 3, 6, and 9
(a) 2
(b) 3
(c) 9
(d) 6
► (c) 9

8. Write in generalised form: 85
(a) 10 × 5 + 8
(b) 10 × 8 + 5
(c) 10 × 5 + 3
(d) 10 × 3 + 5
► (b) 10 × 8 + 5

9. What value should be given to * so that the number 653∗47 is divisible by 11?
(a) 1
(b) 6
(c) 2
(d) 9
► (a) 1

10. N is a 5-digit number divisible by 5. If N is bigger than 10000 and smaller than 10010, what is the value of N?
(a) 10000
(b) 10010
(c) 10005
(d) 10001
► (c) 10005

11. When is a number always divisible by 90?
(a) If it is divisible by both 2 and 45.
(b) If it is not divisible by both 5 and 18.
(c) If it is not divisible by both 9 and 10.
(d) If it is divisible by 3 and 20.
► (a) If it is divisible by both 2 and 45.

12. By which of the following numbers is 477 not divisible?
(a) 3
(b) 7
(c) 53
(d) 9
► (b) 7

13. Write in the usual form: 10×5 + 6
(a) 65
(b) 54
(c) 56
(d) 25
► (c) 56

14. Identify the missing digit in the number 234,4_6, if the number is divisible by 4.
(a) 2
(b) 6
(c) 4
(d) 5
► (d) 5

15. Write in the usual form: 100 × 7 + 10 × 1 + 8
(a) 871
(b) 718
(c) 178
(d) 781
► (b) 718

16. Which of the following is not prime?
(a) 107
(b) 127
(c) 153
(d) 197
► (c) 153

17. By which of the following number 168 is divisible?
(a) 5
(b) 10
(c) 9
(d) 2
► (d) 2

18. 32 + m is a prime number. What is the least value of 'm'?
(a) 3                                    
(b) 5    
(c) 6                    
(d) 4
► (b) 5    

19. Which of the following is divisible by 12?
(a) 284382                         
(b) 624876         
(c) 926248         
(d) 746174   
► (b) 624876         

20. If a number is divisible by 9, it is also divisible by which number?
(a) 3
(b) 6
(c) 2
(d) 4
► (a) 3
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