[離散] 丟骰子

看板Math作者 (無法顯示)時間13年前 (2011/04/02 20:29), 編輯推噓0(002)
留言2則, 2人參與, 最新討論串1/1
a fair die is tossed four times in succession find the probability that the four resulting numbers form a nondecreasing sequence 請問這題要怎麼解呢? 謝謝 -- ※ 發信站: 批踢踢實業坊(ptt.cc) ◆ From: 61.228.29.250

04/02 22:51, , 1F
請求出 1<=x1<=x2<=x3<=x4<=x5<=x6<=6 整數解個數...
04/02 22:51, 1F

04/02 23:10, , 2F
不是只有丟四次嗎 所以應該是只有四個吧?1<=X1~X4<=6
04/02 23:10, 2F
文章代碼(AID): #1DbnQesv (Math)