A = {1,2,3,6}, B = {2,3,5,7} and U = {1,2,3,4,5,6,7,8,9,10}. Then, A' ∩ B' =
If U = {1, 2, 3, 4, 5, 6, 7, 8, 9}, A = {2, 4, 6, 8} and B = {2, 3, 5, 7}, verify that
(i) (A∪B)′=A′∩B′
(ii) (A∩B)′=A′∪B′