Question

if n(A) =5,n(B) =3,n(A intersection B) =3then express the relation between A,B​

Answer 1

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

n(AUB)=5+3--3=5

Answer 2

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

n(AUB)=5+3-3=5

n(AUB) =n(A)=5