dua buah dadu di tos. berapa peluang muncul bilangan ganjil dan bilangan prima

n(S) = 6 x 6 = 36
A = {1,3,5} n(A) = 3
B = {2,3,5} n(B) = 3
A Irisan B = {3,5} n(A irisan B) = 2

P(A gabungan B) = P(A) + P(B) - P(A irisan B)
= n(A) / n(S) + n(B) / n(S) - n(A irisan B) / n(S)
= 3/36 + 3/36 - 2/36
= 4/36 = 1/9