Latest AIEEE Aptitude Question SOLUTION: If U is a universal set and A and B are its two subsets such that n(U) = 700 and n(A) = 300, n(B) = 200, n (A ∩ B) = 100 then n(AC ∩ BC ) = (A) 100 (B) 300 (C) 400 (D) 600