Question

n(A)=45,n(B)=52,n(AUB)= 70 find n (AnB)=?

Answer 1

by using n(AUB)=n(A)+n(B)-n(AnB) this formula n(AnB) is 27

Answer 2

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

70 = 45 + 52 - n(AnB)

n(AnB) = 27