The first four multiples of $7$ are $7, 14, 21$, and $28$. Use this example to help you as you answer the questions below.

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

   Hint (a):

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

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

   Hint (b):

   Follow the hint in part (a), replacing $9$ with $12$.

3. What is the least common multiple of both $9$ and $12$?

   Hint (c):

   This is the first number that appears in both of your lists from parts (a) and (b).

   Answer (c):

   $36$
   $9(4) = 36$
   $12(3) = 36$

4. What is the greatest common factor of both $9$ and $12$?