Question

) If A & B are subsets of the universal set x. & n(x)= 50, n(A)=35,
n(B) = 20, &n(An B') = 5 then find,
i) n(AUB) ii) n(A n B) iii) n(A' n B) iv) n(ANB!)​

Answer 1

it's right answer....