Question

If n(μ) = 100, n(A) = 50, n(B) = 20 and n(AnB)=10, then a[(AUB^c] = (plz answer fast online exam)​

Answer 1

Answer:

sorry I don't know it's answer

Answer 2

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