# How do you find the Gcf of 80 and 25?

Dec 3, 2016

5

#### Explanation:

List down the prime factors of both numbers. Align factors common to both numbers

<pre>
80 : 2 * 2 * 2 * 2 * 5
25 : 5 * 5
</pre>

Collate all common factors

<pre>
80 : 2 * 2 * 2 * 2 * 5
25 : 5 * 5

$$ :                        5


</pre>

The product of the collated common factors will be the GCF.