MCQ Maths Playing with Numbers, Chapter 3 Class 6

1. The exact divisor of number 9 is

(a) 2

(b) 3

(c) 4

(d) 5

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Question 1 of 20

2. Which number is factor of every number

(a) 1

(b) 2

(c) 10

(d) 100

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Question 2 of 20

3. Numbers of factors of given number are:

(a) 1

(b) 2

(c) finite

(d) infinite

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Question 3 of 20

4. The numbers of multiples of given number are

(a) 1

(b) 2

(c) finite

(d) infinite

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Question 4 of 20

5. Every number is multiple of

(a) 1

(b) 2

(c) 10

(d) itself

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Question 5 of 20

6. A number for which sum of all its factors is equal to twice number is called

(a) Perfect number

(b) even number

(c) Odd number

(d) Prime number

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Question 6 of 20

7. How many factors does 36 has

(a) 7

(b) 9

(c) 10

(d) 8

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Question 7 of 20

8. Which of following number is multiple of 8

(a) 2

(b) 4

(c) 10

(d) 16

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Question 8 of 20

9. The numbers having two factors are called

(a) Even

(b) Odd

(c) Prime

(d) Composite

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Question 9 of 20

10. The numbers having more than two factors are called

(a) Prime numbers

(b) Composite numbers

(c) Even numbers

(d) Odd numbers

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Question 10 of 20

11. Which is greatest 3-digit number exactly divisible by 8,10,12

(a) 120

(b) 360

(c) 960

(d) 980

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Question 11 of 20

12. Divisibility by 2,5,10 can be checked by

(a) sum of digits

(b) last digit

(c) last two digits

(d) last three digits

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Question 12 of 20

13. Find the least number which when divided by 6,15 and 18 leave remainder 5 in each case

(a) 90

(b) 180

(c) 95

(d)185

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Question 13 of 20

14. L.C.M. of two co-prime numbers is always

(a) product of numbers

(b) sum of numbers

(c) difference of numbers

(d)none

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Question 14 of 20

15. Find the L.C.M. of 12 and 18

(a) 6

(b) 36

(c) 12

(d) 18

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Question 15 of 20

16. 4= 2x2 , 15= 3x5, so H.C.F. of 4 and 15 is

(a) 0

(b) 1

(c) 2

(d) 3

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Question 16 of 20

17. What is the H.C.F. two consecutive odd numbers

(a) 1

(b) 2

(c) 4

(d) 8

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Question 17 of 20

18. The sum of two consecutive odd number is always divisible by

(a) 2

(b) 4

(c) 6

(d)8

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Question 18 of 20

19. The product of three consecutive numbers is always divisible by

(a) 2

(b) 4

(c) 6

(d) 8

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Question 19 of 20

20. Which of the following numbers has 4 different prime factors

(a) 24

(b) 120

(c) 210

(d)100

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Question 20 of 20