CBSE Class 6 Mathematics Prime Time MCQs Set G

Question. Common factors of 14 and 36 are 1 and
(a) 3
(b) 7
(c) 2
(d) 4

Answer: C

Question. The number 6 has how many factors?
(a) 2
(b) 3
(c) 4
(d) 5

Answer: C

Question. Which of these numbers is prime?
(a) 23
(b) 51
(c) 26
(d) 10

Answer: A

Question. Which pair of numbers has the greatest common factor of 1?
(a) 12 and 18
(b) 7 and 15
(c) 8 and 16
(d) 10 and 20

Answer: B

Question. Product of 16 and 625 is
(a) 1000
(b) 10000
(c) 5000
(d) 2000

Answer: B

Question. Which of the following is not a factor of 56?
(a) 2
(c) 7
(c) 9
(d) 8

Answer: C

Question. In Idli-Vada game, for multiple of 3 we should say
(a) Idli
(b) Vada
(c) Idli-Vada
(d) Dosa

Answer: A

Question. 1170 is not divisible by:
(a) 10
(b) 9
(c) 5
(d) 4

Answer: D

Question. Common factors of 5, 15 and 25 is
(a) 1 and 2
(b) 1 and 5
(c) 5 and 10
(d) Only 1

Answer: B

Question. Which of the following numbers is divisible by 3?
(a) 14
(b) 21
(c) 25
(d) 27

Answer: B

Question. In prime factorisation of 72, the factor 2 occurs how many times?
(a) 1 time
(b) 2 times
(c) 3 times
(d) 5 times

Answer: C

Question. Which of the following numbers is not divisible by 5?
(a) 15
(b) 25
(c) 30
(d) 32

Answer: D

Question. Find a perfect number between 1 and 10.
(a) 4
(b) 6
(c) 8
(d) 2

Answer: B

Question. The number of distinct prime factors of the smadlest 5 -digit number is
(a) 2
(b) 4
(c) 6
(d) 8

Answer: A

Question. The Greek mathematician who found prime numbers using a sieve is
(a) Euclid
(b) Eratosthenes
(c) Jumpy
(d) Anshu

Answer: B

Question. What is the prime factorization of 72?
(a) 2 × 2 × 3 × 2 × 3
(b) 6 × 12
(c) 8 × 9
(d) 2 × 36

Answer: A

Question. Usually we write prime factors in
(a) Decreasing order
(b) Increasing order
(c) Any order
(d) Random order

Answer: B

Question. Which of the following number is the product of exactly three distinct prime number?
(a) 20
(b) 165
(c) 45
(d) 147

Answer: B

Question. The largest prime number written on paper would take
(a) 10 pages
(b) 100 pages
(c) 6500 pages
(d) 1 page

Answer: C

Question. The smallest perfect number is
(a) 6
(c) 28
(c) 496
(d) 8128

Answer: A