Question

. If n (A −B ) = 30, n (A − B) = 50and n(A∩B ) = 20 , n ( A∪B) .

Answer 1

Answer:

If n (A −B ) = 30, n (A − B) = 50and n(A∩B ) = 20 , n ( A∪B) .

=since (AUB) =30, n=A--B