# Question #8d992

##### 2 Answers

168.

#### Explanation:

Use the picture I've created (linked):

The **least common factor** is 168.

#### Explanation:

The prime factorization method is the fastest for sure! However, another way to answer or look at this question is to briefly examine what **LCM** stands for. The **Least Common Multiple** says find all the multiples of 8, 7, and 12 and then find the *least* or smallest one that is common to all three numbers.

The multiples of 8 are:

The multiples of 7 are:

The multiples of 12 are:

With this small list, none of the multiples is common to all three. Looking at a few more, we get:

The (additional) multiples of 8 are:

The (additional) multiples of 7 are:

The **least common factor** is therefore 168.