Question

what is the HCF of 42 , 49, 63​

Answer 1

Answer:

$42 = 2 \times 3 \times 7 \\ 49 = 7 \times 7 \\ 63 = 3 \times 3 \times 7$

$\boxed{ \fcolorbox{red}{yellow}{highest common factor = 7}}$