don't ask homework online, this is a hw question in
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送交者: xj 于 2006-12-11, 08:43:05:
回答: 5把钥匙的环型钥匙串上加两把钥匙,问这两把钥匙相邻的概率 由 lanzhongdan 于 2006-12-11, 02:25:08:
chapter 1 of one of the popular stat books.
所有跟贴:
- 出些题目给大家好玩而已 - lanzhongdan (19 bytes) 2006-12-11, 10:18:57 (115202)
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