Problem 7: Find n(AB) and n(AB) where n(U)=70,n(A)=45,n(B)=30, n(AB)=15. Also, draw a Venn-diagram

problem 7: Find B) andn(A U B)' where n(U) = 70, n(A) = 45, n(B) = 30, n(A n B) = 15. Also. draw a Venn-diagram.