Question

What is the greatest common factor (GCF) of `26` and `30`?

Answer 1

`GCF=2`

Explanation:

GCF is the largest factor that divides exactly into `26 and 30`.

We start by listing all their factors and picking out the common ones, and then the largest.

factors of `" "26:" "{1,2,13,26}`

factors of`" "30:" "{1,2,3,5,6,10,15,30}`

common factors `{1,2}`

`GCF=2`