1. A = {1, 2, 3, 4}, B = {2, 4, 6, 8}, C = ℤ, D = {a, b, c}, E = {3, 2, 1}
Which sets are equal?
Which sets are equivalent?
Which sets are subsets or proper subsets?
How many subsets and proper subsets does A have?

2. A = {1, 2, 3, 4}, U = {x | x ∈ℕ and x < 10}
Find n(A’).
Describe A in set-builder notation (2 ways).

3. True or False: 𝐴∩𝐵⊆𝐶∪∅
Describe 𝐴′∩(𝐵∪𝐶)′ using a Venn Diagram and list all elements in that set. Also make a cardinality Venn Diagram.

4. Describe the shaded area.

5. Find (A ∪ B)’ x C ∩𝐵’
Find n(C’ x A)