AMH - g_p6.39

The , or , of numbers $a$ and $b$ is the largest whole number $m$ such that $m$ divides $a$ and $m$ divides $b.$

The greatest common divisor is sometimes called the highest common factor, or hcf.

Example: Find the GCD of $4$ and $6.$

Solution $\downarrow$

The divisors of $4$ are $1,2,$ and $4.$ The divisors of $6$ are $1,2,3,$ and $6.$ The common divisors are $1$ and $2.$ So, $2$ is the GCD.

Find the GCD of these two numbers.

${}$ and ${}$

Try again! The GCD of the two numbers given is ${}$ .