why f(6)>1/4?

来源: xyz100 于 2005-02-09 14:10:45 [] [旧帖] [给我悄悄话] 阅读数 : (230 bytes)
回答: 一道概率题怎么也做不出 由 陈省生先生转世 于 2005-02-06 13:04:43

如果手里已经有6快的话，就有1/4的概率直接赢到7块，so 1/4 is the max number of f(6) can get. why your formula
(f(6) = 1/4 + 3/4 * f(5)) can get a number bigger than 1/4?
I believe f(6)=1/4*f(5).
Am I missing something?

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• u really miss sth -yorkyang- ♀ 给 yorkyang 发送悄悄话 (226 bytes) () 02/09/2005 postreply 14:46:33

• Looks I did miss something -xyz100- ♂ 给 xyz100 发送悄悄话 (126 bytes) () 02/10/2005 postreply 14:01:26

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