CBSE Class 6 Mathematics Prime Time MCQs Set C

Question. Which of the following numbers is not a composite number?
(a) 9
(b) 12
(c) 17
(d) 20

Answer: C

Question. A composite number is one that has
(a) Only two factors
(c) No factors
(c) More than two factors
(d) None of the above

Answer: C

Question. A prime number between 30 and 40 is:
(a) 31
(b) 32
(c) 33
(d) 34

Answer: A

Question. What is the product of the first two prime numbers?
(a) 2
(b) 3
(c) 5
(d) 6

Answer: D

Question. Which of the following is not the common multiple of 2 and 5?
(a) 10
(b) 15
(c) 20
(d) 30

Answer: B

Question. How many factors does 100 have?
(a) 5
(b) 9
(c) 10
(d) 12

Answer: B

Question. Which number is divisible by 8?
(a) 1244
(b) 1300
(c) 1456
(d) 1700

Answer: C

Question. What should players say in the Idli-Vada game for the first common multiple of 3 and 5?
(a) Idli
(c) Vada
(c) Idli-Vada
(d) Nothing

Answer: C

Question. Which pair of numbers is NOT co-prime?
(a) 7 and 9
(b) 11 and 17
(c) 8 and 10
(d) 5 and 13

Answer: C

Question. What is the prime factorization of 100?
(a) 10 × 10
(b) 2 × 2 × 5 × 5
(c) 20 × 5
(d) 4 × 25

Answer: B

Question. The largest number, which always divides the sum of any pair of consecutive odd numbers is
(a) 2
(b) 4
(c) 6
(d) 8

Answer: B

Question. Which number is neither prime nor composite?
(a) 1
(b) 2
(c) 3
(d) 4

Answer: A

Question. The number with unit digit 8 is divisible by:
(a) 2
(b) 3
(c) 4
(d) 5

Answer: A

Question. How many factors does 28 have?
(a) 4
(c) 5
(c) 6
(d) 7

Answer: C

Question. What is the greatest common factor of 15 and 30?
(a) 15
(b) 10
(c) 5
(d) 20

Answer: A

Question. The number of distinct prime factors of the largest 4- digit number is
(a) 2
(b) 3
(c) 5
(d) 11

Answer: B

Question. Which of the following numbers is divisible by 3?
(a) 22
(b) 33
(c) 44
(d) 55

Answer: B

Question. What is the least common multiple of 6 and 8?
(a) 24
(b) 48
(c) 36
(d) 12

Answer: A

Question. 2 × 3 × 7 is the prime factorization of
(a) 21
(b) 1237
(c) 237
(d) 42

Answer: D

Question. What jump size will let Jumpy land on both 15 and 30?
(a) 2
(c) 3
(c) 5
(d) 15

Answer: D

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

Answer: B

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

Answer: C

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

Answer: C

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

Answer: B

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

Answer: A

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

Answer: A

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

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

Answer: C

Question. Which number is a common factor of 24 and 36?
(a) 5
(b) 8
(c) 12
(d) 18

Answer: C

Question. The number of prime numbers between 1 and 10 is:
(a) 3
(b) 4
(c) 5
(d) 6

Answer: B

Question. What is the greatest common factor (GCF) of 24 and 36?
(a) 6
(b) 12
(c) 18
(d) 24

Answer: B

Question. Which pair of number is coprime?
(a) 4 and 6
(b) 9 and 12
(c) 8 and 15
(d) 12 and 18

Answer: C

Question. A number is divisible by 5 and 6. It may not be divisible by
(a) 10
(b) 15
(c) 30
(d) 60

Answer: D