Second question.

来源: wxcfan123 于 2011-12-03 19:11:34 [] [旧帖] [给我悄悄话] 本文已被阅读： 0 次 (233 bytes)

P(10) = the tenth student picked the diamond, because there are only 10 student, so

P(11) = the teacher picked the diamond.

     = 1 - (P(10) + P(9) + ...).

Why should P(10) = P(11)?

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• 最后两块,有一有宝石,两人得的概率是一样的. -jinjing- ♀ 给 jinjing 发送悄悄话 (0 bytes) () 12/03/2011 postreply 21:12:10

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