Question

If n(μ)=100, n(A)=50, n(B)=20 and n(A​

Answer 1

Answer:

n(U)=50,n(A)=20

n(A∪B)=18            n(B−A)=?

So, n(A∪B)=n(0)−n(A∪B)

So. n(A∪B)=32

n(B−A)=n(A∪B)−n(A)

=32−20

n(B−A)=12

Step-by-step explanation: