CBSE Class 7 Mathematics Finding Common Ground MCQs Set B

Question. Every common multiple contains the prime factorisation of the.
(a) HCF
(b) Given numbers
(c) Larger number
(d) 1

Answer: B

Question. Mahaviracharya was an ancient Indian.
(a) King
(b) Teacher
(c) Mathematician
(d) Farmer

Answer: C

Question. The largest prime found recently has more than 4 crore.
(a) Factors
(b) Digits
(c) Multiples
(d) Zeros

Answer: B

Question. A counterexample is used to show a conjecture is.
(a) True
(b) False
(c) Good
(d) Proven

Answer: B

Question. HCF of any two even numbers is always at least.
(a) 1
(b) 2
(c) 3
(d) 5

Answer: B

Question. Prime factorization of 225 is 3 x 3 x.
(a) 2 x 2
(b) 5 x 5
(c) 7 x 7
(d) 3 x 5

Answer: B

Question. To find HCF using division method we multiply all factors on the.
(a) Right
(b) Left
(c) Bottom
(d) Top

Answer: B

Question. To find LCM using division method we multiply common factors and the.
(a) Quotients at bottom
(b) First number
(c) Last number
(d) Zero

Answer: A

Question. Guna says we can divide by bigger common factors to find HCF.
(a) Faster
(b) Slower
(c) Wrongly
(d) Never

Answer: A

Question. Smallest number that is a multiple of all numbers from 1 to 10 is.
(a) 100
(b) 1260
(c) 2520
(d) 5040

Answer: C

Question. Ancient mathematician Mahaviracharya wrote a problem about adding.
(a) Integers
(b) Fractions
(c) Primes
(d) Decimals

Answer: B

Question. For numbers 630 and 770 Anshu first divided by.
(a) 2
(b) 5
(c) 7
(d) 10

Answer: D

Question. After dividing 630 and 770 by 10 and 7 the HCF is 10 multiplied by.
(a) 2
(b) 5
(c) 7
(d) 9

Answer: C

Question. HCF of 630 and 770 is.
(a) 10
(b) 7
(c) 70
(d) 17

Answer: C

Question. LCM stands for the.
(a) Longest Common Multiple
(b) Lowest Common Multiple
(c) Last Common Multiple
(d) Low Common Multiplier

Answer: B

Question. The page number designs in the book are from 1 to.
(a) 50
(b) 100
(c) 200
(d) 500

Answer: B

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

Answer: B

Question. The date the largest prime number was found is.
(a) Jan 1
(b) Oct 12 2024
(c) Aug 15
(d) Dec 31

Answer: B

Question. Mystery color designs are given around the.
(a) Pictures
(b) Page numbers
(c) Chapters
(d) Box

Answer: B

Question. Smallest common multiple of 4 and 6 is.
(a) 2
(b) 10
(c) 12
(d) 24

Answer: C