For question 4
(A u B)' = {3, 7, 9}
This implies the values that are not in either the spheres of A or B or both but are within the rectangle
For question 3
Recall that A' n B' = (A u B)'
Thus A' n B' = {3, 7, 9}
For question 2
A - B'
A = {1, 2, 4, 5, 8}
B = {0, 2, 4, 6}, then B' = {1, 3, 5, 7, 8, 9}
Thus, A - B' = {2, 4}
For question 1
A' = {0, 3, 6, 7, 9}
B = {0, 2, 4, 6}
A' u B = {0, 2, 3, 4, 6, 7, 9}