Question

The greatest common divisor of $12$ and $28$ is

• A. $2$
• B. $4$
• C. $12$
• D. $8$

Answer 1

The correct option is B $4$

Prime factorization of the numbers $12$ and $28:$
$12=2\times 2\times 3$
$28=2\times 2\times 7$
The greatest common divisor is the product of the common factors, that is, $2\times 2=4$