18
124
112
14
Correct answer is C
Chance of x = 12
Change of Y = 23
Chance of Z = 14
Chance of Y and Z only occurring
= Pr (Y ∩ Z ∩ Xc)
where Xc = 1 - Pr(X)
1 - 12 = 12
= Pr(Y) x Pr(Z) x Pr(Xc)
= 23 x 14 x 12
= 112
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