回複：The problem is not clear.

來源: jinjing 於 2010-03-30 20:32:58 [] [舊帖] [給我悄悄話] 閱讀數 : (76 bytes)
回答: Sum of dice throwing 由 crazy_math 於 2010-03-27 23:42:13

We had better change the question as for big n,the probability P of 13 | Xn.

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