Match the following.

given

d = {x | x is a whole number}
e = {x | x is a perfect square < 100}
f = {x | x is an even number between 10 and 20}

1. d ∩ e a. {1, 4, 9, 16, 25, 36, 49, 64, 81}
2. d ∩ f b. {1, 4, 9, 16, 25, 36, 49, 64, 81, 12, 14, 18}
3. d ∩ (e ∩ f) c. {all whole numbers}
4. d ∪ (e ∩ f) d. {16}
5. d ∩ (e ∪ f) e.{12,14,16,18}