問題詳情

179. Four distinct integers are chosen randomly and without replacement from the first twelve positive integers. Let X be the random variable representing the second largest of the four selected integers, and let p be the probability function for X.
Determine p(x), for integer values of x, where p(x) > 0.
(A)


(B)


(C)


(D)


(E)

參考答案

答案:A

統計:A:0,B:0,C:0,D:0,E:0

難度:計算中