Question

Let U be the universal set containing 900 elements. If A and B are subsets of U such that n(A) = 250 , n (B) =350 and n (A ∩ B )= 150. Then , n (A’ ∩ B’ ) =


400
450
350
None of the above

Answer 1

Step-by-step explanation:

n(AUB) = n(A) + n(B) + n(AnB)

n(AUB) = 250 + 350 + 150

n(AUB) = 750