Question

if A and B are two sets such that n ( A) =70 ,n (B) = 60 and n (AnB) =20 , then n (AUB ) is a)240 b) 50 c) 40 d) 20​

Answer 1

Answer:

110

Step-by-step explanation:

n(A U B) = n(A) + n(B) - n(A Π B)

So

n(A U B) = 70 + 60 - 20

=110

Hope it helps.