{Positive multiples of 4} (Enter your answers as a comma-separated list. Enter only the first three values of this set.)

what, you have no idea how to list multiples of 4?

How about I illustrate with multiples of 3?

3,6,9,...

To find the positive multiples of 4, we can start with the number 4 and keep adding 4 to it. Here are the first three positive multiples of 4:

4, 8, 12