[理工] 96清大離散

看板Grad-ProbAsk作者s97610017 (粥有兪)時間11年前 (2013/01/22 17:41)推噓3(3推 0噓 5→)

留言8則, 4人參與討論串1/2 (看更多)

基礎計算機科學第九題 Three distinst students got into the elevator on the ground floor of our 8-floor EECS building. What is the probability that they will all get off at different floors. 想請問這題的正解是 (7*6*5)/(7*7*7) 不知道哪邊來的詳解還是 (8*7*6)/(8*8*8) (rnbjacky榜首大大寫的我是算7*6*5那個但是有看到兩種解答想確認一下當年給的正解是多少希望不要因為這種文字誤會失掉分數 -- ※ 發信站: 批踢踢實業坊(ptt.cc) ◆ From: 114.33.35.239

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big2

01/22 18:31, , 1^F

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witz

01/22 18:33, , 2^F

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witz

01/22 18:35, , 3^F

01/22 18:35, 3^F