Question

(d)find the hcf of 21 and 84​

Answer 1

I m not sure about my ans.

Answer 2

Step-by-step explanation:

$21 = 3 \times 7 \\ \\ 84 = 2 \times 2 \times 3 \times 7 \\ \\ common \: factors \: = 3 \: and \: 7 \\ \\ \therefore \: hcf \: of \: 21 \: and \: 84 = 3 \times 7 = 21$