Question

1. diketahui: n (A) = 21
n(B) = 18
n(AυB)= 32
tentukan n(AΠB) !

2. diketahui: n(A)=18
n(B)=13
jika BСA
tentukan n(AυB)!!!!!

Answer 1

1.  n(AnB) = n(A) + n(B) - n(AUB) = 21 + 18 - 32 = 7
2.  n(AUB) = n(A) = 18