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Verified answer
2 buah dadun(S) = 36
n(A) = { (2,2) ,(2,3), (2,5), (3,2), (3,3), (3,5), (5,2), (5,3), (5,5) } = 9
P(A) = n(A)/n(S) = 9/36 = 1/4
dilempar sebnyak 180 (N) kali..
E(A) = P(A) x N
= 1/4 x 180
= 45 <<===