Question

(A)=20, n(B)=28, n(AUB)=36 (AnB)?

Answer 1

Step-by-step explanation:

n(A)=20 n(B)=28 n(AUB)=36

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

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

=>-n(AnB)=36-48

=>-n(AnB)= -12

=>n(AnB)=12