Final answer:
The smallest multiple that three and four have in common is 12.
Step-by-step explanation:
The smallest multiple that three and four have in common is 12.
To find the smallest multiple, we can find the multiples of both three and four and look for the smallest number that appears in both lists.
The multiples of three are 3, 6, 9, 12, 15, ...
The multiples of four are 4, 8, 12, 16, 20, ...
So, the smallest multiple that three and four have in common is 12.