without going thru the calculations, here's ballpark

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送交者: Enlighten 于 2008-09-26, 12:19:06:

回答: 转一道很简单的概率题 由 Amsel 于 2008-09-26, 12:05:04:

1.>90%
2.between 50% and 80%, probably between 50 and 60


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