How do you find the Gcf of 80 and 25?

1 Answer
Dec 3, 2016

Answer:

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.