Question

Let A be the set of integers 1 through 10 , and B the set of multiples of 4 less than 15. Find A ∩ B .

Answer 1

Answer:   {4, 8}

Work Shown

A = {1, 2, 3, 4, 5, 6, 7, 8, 9, 10}

B = {4, 8, 12}

The values 4 and 8 are in both sets at the same time, so we would write:

A ∩ B = {4, 8}

This is the overlapped region of the Venn diagram. See below.