CBSE Class 6 Mathematics Prime Time MCQs Set E

Question. In thread art, if the thread is tied to every peg, the numbers are
(a) Same
(b) Co-prime
(c) Even
(d) Small

Answer: B

Question. Which is the prime number nearest to 60?
(a) 59
(b) 61
(c) 63
(d) 65

Answer: B

Question. Numbers like 15, 30, and 45 for 3 and 5 are called
(a) Factors
(b) Prime numbers
(c) Common multiples
(d) Small numbers

Answer: C

Question. Which of the following pair is not coprime?
(a) 11, 12
(b) 73, 74
(c) 84, 94
(d) 97, 98

Answer: C

Question. Numbers divisible by 10 always end with
(a) 5
(b) 0
(c) 2
(d) 1

Answer: B

Question. Which of the following is a factor of 24?
(a) 5
(b) 7
(c) 8
(d) 10

Answer: C

Question. To check divisibility by 4, we look at the last
(a) One digit
(b) Two digits
(c) Three digits
(d) Zero digits

Answer: B

Question. How many factors does the number 64 have?
(a) 6
(b) 7
(c) 8
(d) 9

Answer: B

Question. Number 15 is a multiple of 3 and also a multiple of
(a) 2
(b) 4
(c) 5
(d) 7

Answer: C

Question. What is the prime factorization of 50?
(a) 2 × 5 × 5
(b) 2 × 10
(c) 10 × 5
(d) 25 × 2

Answer: A

Question. 15 and 39 are not co-prime because they have a common factor
(a) 5
(b) 3
(c) 2
(d) 10

Answer: B

Question. In which of the following pair, the first number is divisible by the second number? Use prime factoristaion.
(a) 75 and 30
(b) 90 and 60
(c) 125 and 75
(d) 75 and 15

Answer: D

Question. Writing 56 as 2 x 2 x 2 x 7 is called
(a) Addition
(b) Prime factorisation
(c) Counting
(d) Sieve

Answer: B

Question. Which is the only even prime number?
(a) 2
(c) 4
(c) 6
(d) 8

Answer: A

Question. Sieve method was found by Eratosthenes who was a
(a) Indian teacher
(b) Greek mathematician
(c) Science student
(d) Shopkeeper

Answer: B

Question. Which of the following is a composite number?
(a) 13
(b) 19
(c) 27
(d) 29

Answer: C

Question. Multiples of 2 have last digit as 0, 2, 4, 6 or
(a) 5
(b) 9
(c) 8
(d) 7

Answer: C

Question. Which of the following pairs has no common factors?
(a) 9 and 15
(b) 12 and 30
(c) 4 and 9
(d) 20 and 25

Answer: C

Question. Guna wants to pack 12 figs in boxes, the number of rows or columns will be its
(a) Multiples
(b) Factors
(c) Sum
(d) Difference

Answer: B

Question. Which of the following numbers is both a factor of 30 and 40?
(a) 2
(b) 3
(c) 5
(d) 7

Answer: C