# Question #32c43

##### 2 Answers

GCF = 6

#### Explanation:

First, list out the **factors** for each number (a factor is a number that goes evenly into another number).

Factors of

Factors of

Factors of

12, 30, and 42 all have the factors 1, 2, 3, and 6 in common. The largest of these common factors (**greatest common factor**) is 6.

Hope this helps!

#### Explanation:

Write each number as the product of its prime factors:

Identify which factors are common

Multiply them together to find the GCF.