Lesson eLearning

Find the HCF of 24 and 36 using prime factorisation.

medium MCQ Class 7 · Mathematics · Rational Numbers
  1. 12
  2. 6
  3. 18
  4. 24
Answer
12

The correct answer is 12 — HCF = 2² × 3 = 12.

Step-by-step solution

  1. Prime factors of 24 = 2³ × 3.
  2. Prime factors of 36 = 2² × 3².
  3. HCF = 2² × 3 = 12.

Concept tested: Prime Factorisation and HCF

Published · How this solution was prepared and checked

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