Question

Frame word problem based on the concept of number of sets.​

Answer 1

Answer:

Let A and B be two finite sets such that n(A) = 20, n(B) = 28 and n(A ∪ B) = 36, find n(A ∩ B).

If n(A - B) = 18, n(A ∪ B) = 70 and n(A ∩ B) = 25, then find n(B).