Multiple choice

Find the H.C.F. of 36, 24 and 72.

  1. 6

  2. 12

  3. 24

  4. 72
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B Correct answer
Explanation

The prime factorisation of 36 = 22 $\times$ 32 The prime factorisation of 24 = 23 $\times$ 3 The prime factorisation of 72 = 23 $\times$ 32 2 $\times$ 3 = 4 $\times$ 3 = 12

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