### Home > MC1 > Chapter 4 > Lesson 4.1.2 > Problem4-19

4-19.

The first four multiples of $7$ are $7, 14, 21$, and $28$.

1. What are the first six multiples of $9$?

The first multiple of $9$ is $9\left(1\right) = 9$.
The second multiple of $9$ is $9\left(2\right) = 18$.
The third multiple of $9$ is $9\left(3\right) = ?$

2. What are the first six multiples of $12$?

Look to part (a) for assistance.

3. What is the lowest number that is a multiple of both $9$ and $12$?

This is the first number that appears in both of your lists.