Davis just marked 18 on a product game board. on which factors might the paper clips be placed? List all of the possibilities

This question is basically asking "what factor pairs (pairs of numbers multiplied together) make 18?"

I don't know anything about your board, so some of these might not be possible. (Maybe yours doesn't go all the way up to 18--just be sure to check yourself on it.)

1 * 18

2 * 9

3 * 6

6 * 3

9 * 2

18 * 1