Multiple choice

LCM and HCF of two numbers are 120 and 3 respectively. One of these numbers is 24. What is the second number?

  1. 30

  2. 15

  3. 20

  4. 60
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

For two numbers, the product of LCM and HCF equals the product of the numbers. Given LCM = 120, HCF = 3, and one number = 24, we have: 120 × 3 = 24 × x. Solving: 360 = 24x, so x = 15. The second number is 15.

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