Question

Ifn (A) = 25, n (B) = 20 anda (ANB) = 10
then n (AUB)=?​

Answer 1

Answer:

n(A)+n(B) -n( ANB) = n(AUB)

25+20-10 = n(AUB)

45-10= n(AUB)

35=n(AUB)