# How do you find the GCF of 15 and 25?

Jul 29, 2017

$5$

#### Explanation:

The Greatest Common Factor of $15 \mathmr{and} 25 \text{ is } 5.$

The factors of $15$ are $3 \mathmr{and} 5$
(the number itself and 1 do not count).

The factor(s) of $25 \text{ is } 5$. After all, it is a square number.

The only factor that is in common is $5$

(again remember that 1 does not count here -although $1$ is common, $5$ is higher)

Hope I helped!