Question

Let A and B two subsets of the universal set U. If n(U) = 2.n(B) = 4.n(A), n(A∩B) = 1 and n((A∪B)') = 4 are given. Find n(U).

Can you explain detailed its important.

Thanks already.

Answer 1

Answer:

n(U) = 2. It is useful for you.