Question

Jika n(A) =4, n(B) =3, dan n(A Π B )=2 hitung n(A U B),n(A - B),dan n(B-A).

Answer 1

N(AuB)= n(A) + n(B) - n(anB) = 4+3-2 = 5
n(A-B)= n(A) - n(B) = 4-3 = 1
n(B-A)= n(B) - n(A) = 3-4 = -1