CBSE Class 7 Mathematics Finding Common Ground MCQs Set G

Question. The smallest common multiple of 6 and 8 is.
(a) 12
(b) 18
(c) 24
(d) 48

Answer: C

Question. HCF multiplied by LCM is equal to the product of the.
(a) Factors
(b) Primes
(c) Two numbers
(d) Quotients

Answer: C

Question. If the HCF of two numbers is 1 they are.
(a) Even
(b) Odd
(c) Co-prime
(d) Composite

Answer: C

Question. If total cows were less than 200 and divisible by 3, 5 and 7 the number is.
(a) 100
(b) 105
(c) 150
(d) 210

Answer: B

Question. Box size is 12 cm 18 cm and 36 cm. Side of the cube to be packed must be a.
(a) Multiple
(b) Common factor
(c) Prime only
(d) 0

Answer: B

Question. Largest sized cube that can fit in 12 cm 18 cm and 36 cm box is.
(a) 12 cm
(b) 9 cm
(c) 6 cm
(d) 4 cm

Answer: C

Question. A number greater than 1 having only 1 and itself as factors is.
(a) Composite
(b) Prime
(c) Even
(d) Odd

Answer: B

Question. Method used to list all prime numbers is.
(a) Sieve of Eratosthenes
(b) Division
(c) Multiplication
(d) Addition

Answer: A

Question. Any number can be written as a product of.
(a) Even numbers
(b) Odd numbers
(c) Primes
(d) Factors

Answer: C

Question. Shop gives free gajak every Monday which means every.
(a) 5 days
(b) 7 days
(c) 10 days
(d) 12 days

Answer: B

Question. Kabamai will get free gajak again after how many days?
(a) 17 days
(b) 35 days
(c) 70 days
(d) 100 days

Answer: C

Question. Prime factorization of 90 is.
(a) 3 x 30
(b) 2 x 45
(c) 3 x 3 x 2 x 5
(d) 9 x 10

Answer: C

Question. In prime factorization if we change the order of factors the result.
(a) Changes
(b) Is always same
(c) Becomes wrong
(d) Doubles

Answer: B

Question. Prime factorization of a prime number is.
(a) 1
(b) Number itself
(c) 0
(d) Two factors

Answer: B

Question. Smallest number divisible by 3, 4, 5, and 7 is their.
(a) HCF
(b) LCM
(c) Product
(d) Sum

Answer: B

Question. LCM of 3, 4, 5, and 7 is.
(a) 60
(b) 210
(c) 420
(d) 105

Answer: C

Question. For two different prime numbers m and n the LCM is.
(a) m + n
(b) m x n
(c) 1
(d) m - n

Answer: B

Question. HCF of two consecutive even numbers is always.
(a) 1
(b) 2
(c) 4
(d) 6

Answer: B

Question. The HCF of a number n and 5n will be.
(a) 5
(b) n
(c) 5n
(d) 1

Answer: B

Question. The LCM of numbers 3 and 24 is.
(a) 3
(b) 6
(c) 24
(d) 72

Answer: C