Let U = {0, 1, 2, 3, 4, 5,...}, A = {1, 2, 3, 4,...}, B = {4, 8, 12, 16,...}, and C = {2, 4, 6, 8,...}. Determine the following: A′ ∩ C

Are you looking for the intersection of sets A and C? If A is all real numbers >/= 1 and C is all real EVEN numbers >/= 2 Then everything in C is in A and C is a sub set of A and C is itself the intersection of the two sets.

so confusing :(

Use Venn diagrams.

http://mathworld.wolfram.com/VennDiagram.html

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