21. Suppose that three numbers are selected one by one, at random and without replacement from the...
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21. Suppose that three numbers are selected one by one, at random and without replacement from the set of numbers {1, 2, 3, . . . , n}. What is the probability that the third number falls between the first two if the first number is smaller than the second?
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Fundamentals Of Probability With Stochastic Processes
ISBN: 9780131453401
3rd Edition
Authors: Saeed Ghahramani
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