Question

5.n(A)=15, n(A U B) =25, n ( A ^ B )=10, then N(B)=?

Answer 1

Answer:

n(B)=20

Step-by-step explanation:

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

= 25+10-15

=35-15

n(B) =20