Question

If n(U)=70,n(A)=25,n(B)=30,n(AUB)' is​

Answer 1

Answer:

ANSWER

n(A∪B)=n(A)+n(B)−n(A∩B)−−−−−−−(1)

Given n(A)=7

n(B)=9

n(A∪B)=14

Substituting in 1

14=7+9−n(A∩B)

⇒n(A∩B)=16−14=2