# How do you find the greatest common factor of 12 and 18?

##### 1 Answer

Dec 2, 2016

#### Answer:

6 is the Greatest common factor

#### Explanation:

Divide both the number with a common number starting with 2 or 3 or 5 or 7 ....or so on which can divide commonly to both of the number.

Here

Divided both 12 and 18 by 2 hence

Further divided both 3 and 9 by 3 hence

Hence common factors are 2 and 3

And greatest common factor among all the common number is 3.

Hence answer is 6.