Question

can anyone assist me on this math problem?

Select the statements that are true based on the following given information.
D = {x | x is a whole number}
E = {x | x is a perfect square < 36}
F = {x | x is an even number between 20 and 30}

[and here are the math answers bellow]

The expression D ∩ E is {1, 4, 9, 16}.
The expression D ∩ F is {12, 14, 16, 18}.
D ∪ (E ∩ F) is {all whole numbers}.
(E ∩ F) is the empty set.The expression D ∩ (E ∪ F) is 25

please help