Diketahui n(A) = 23, n(B) = 19, jika n ( A ∩ B ) =10, maka n (A υ B ) =
n(AUB) = n(A) + n(B) – n(AnB)
= 23 + 19 – 10
= 32
Diketahui n(A) = 23, n(B) = 19, jika n ( A ∩ B ) =10, maka n (A υ B ) =
n(AUB) = n(A) + n(B) – n(AnB)
= 23 + 19 – 10
= 32