statistics

7 men and 3 women are ranked according to their scores on an exam. Assume that no two scores are alike, and that all 10! possible rankings are equally likely. Let X denote the highest ranking achieved by a man (so X=1 indicates that a man achieved the highest score on the exam). Find each of the following:

How do I get p(x=3) and p(x=7)?

P(x=1)= 7/10 =.70

p(x=2)= (7/10) * (3/9) = 0.233333333

p(x=3)

p(x=7)

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