n(A) = 5C1 x 3C1 = 5 x 3 = 15
n(S) = 8C2 = 28
P(A) = 15/28
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n(A) = 5C1 x 3C1 = 5 x 3 = 15
n(S) = 8C2 = 28
P(A) = 15/28
Na = 5C1 3C5 =15
Ns = 8C2 =28
Jadi 15:28