s****l 发帖数: 10462 | 1 【 以下文字转载自 Mathematics 讨论区,原文如下 】
发信人: stlstl (射天狼), 信区: Mathematics
标 题: Re: a seemly simple question, but
发信站: Unknown Space - 未名空间 (Thu Oct 23 16:08:27 2003) WWW-POST
some related points/thoughts.
two methods may not eventually reach all 10000 balls in the bag. Asking
whether two methods are the same, I want to find whether there are some balls
which can be selected by method A but not by method B, and vice versa.
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