Answer:
5 2-quart containers
Explanation:
So I went through all the possible equations:
2 x 5 = 10
4 x 5 = 20
4 x 1 x 2 x 4 = 12
4 x 2 x 2 x 3 = 14
4 x 3 x 2 x 2 = 16
4 x 4 x 2 x 1 = 18
There's probably an easier method but I don't know it. Hope this was helpful!!