Question: 12 ! 5) Please show ALL work write down the numbers 1, 2,..., a in a random order, with all ni orders equally likely. Undechre

12 ! 5) Please show ALL work write down the numbers 1, 2,..., a in a random order, with all ni orders equally likely. Undechre each number in the sequence that is smaller than the number immediately following it, for example, If n=5, one possible sequence is n 5, 3, 2, 4, 1 and after underlining we get 5, 3, 3, 4, 1. What is the expected number of underlined numbers
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