Question

2. If n(A) = 20, n (B) =28 and n (AU B) = 36 ,then n(A∩ B)=?​

Answer 1

4557747372268538274477777

Answer 2

Step-by-step explanation:

given,

n(A)=20

n(B)=28

n(AUB)=36

n(AnB)=?

Now,

=> n(AUB)=n(A)+n(B)-n(AnB)

=> 36=20+28-n(AnB)

=> n(AnB)=48-36

.: n(AnB)=12