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)





答案:A
統計:A:0,B:0,C:0,D:0,E:0
難度:計算中