Mathematics · Basic Arithmetic & Number Systems · page 7 of 7

HCF and LCM MCQs with Answers

Includes 3 past paper MCQs (marked).

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HCF and LCM MCQs (61–63)

3 MCQs with answers and a short one-liner. Hide answers to test yourself.

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61.
Mubashir exercises every $8$ days, and Ali exercises every $4$ days. Mubashir and Ali both exercised today. After how many days will they both exercise again on the same day?
Correct Answer: B. $8$ days
One-liner
They will both exercise again on the same day after $8$ days.
62.
Find the greatest number which will divide 25, 73 and 97 so as to leave the same remainder in each case.
Correct Answer: B. $24$
One-liner
The greatest number that divides 25, 73, and 97 leaving the same remainder is $24$.
63.
The HCF of $24$ and $40$ is:
Correct Answer: C. $8$
One-liner
The HCF of $24$ and $40$ is $8$.