Question

n(A) = 8, n (B) = 9, n(An B) = 6 where A and B are two sets, then n (A U B) =​

Answer 1

Given,

and

Open Answer in App 71

n(A) = B

n(B) = 6, A

and B are disjoint <br>

⇒ An B = ⇒ n(AB) = 0

:. n(AUB) = n(A) + n(B) − n(AB)