Question

Find the HCF of 24, 32 and 36.

• A. 4
• B. 2
• C. 3
• D. 1

Answer 1

The correct option is A

4

Prime Factorisation:
24 = 2 $\times$ 2 $\times$ 2 $\times$ 3
32 = 2 $\times$ 2 $\times$ 2 $\times$ 2 $\times$ 2
36 = 2 $\times$ 2 $\times$ 3 $\times$ 3

$\Rightarrow$ HCF of 24, 32 and 36 = $2^2$ = 4