# How do you find the gcf 15 18 30?

##### 1 Answer

Dec 20, 2016

The Greats Common Factor Is:

#### Explanation:

First, simply list out the factors that will multiply to give us each of the numbers. See below:

Now we have to ask ourselves, what number out of all three of these is the greatest common factor? All three of these numbers share a common factor and that is

Therefore, the greatest common factor of all these numbers is

Answer: