Question

A Venn diagram is shown below:

Answer 1

The elements of A are {1,2,3,4} while that of B are {1,2,5,6}. the problem asks for (A ∩ B) ' which means that we take the alternate universe of (A ∩ B). (A ∩ B) which is composed of elements that are present in both sets which are {1,2}. (A ∩ B)' then should be {3,4,5,6}