If n(U)=700,n(A)=200,n(B)=240,n(A∩B)=100, then n(A′∪B′) is equal to
If n(U)=700, n(A)=200, n(B)=300 and n(A∩B)=100, then n(A′∩B′)= ___.
If n(∪)= 700, n(A) = 200, n(B) = 300 , n(A∩B) = 100, then n(A′∩B′) = 300