問題詳情

203. Four distinct integers are chosen randomly and without replacement from the first twelve
positive integers. X is the random variable representing the second smallest of the four
selected integers, and p is the probability function of X. Determine p(x) for x = 2,3,…,10.
(A)


(B)


(C)


(D)


(E)


參考答案

答案:B

統計:A:0,B:0,C:0,D:0,E:0

難度:計算中