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排列组合趣题

2012-12-15 20:49:06| 分类：方法 | 标签： |举报 |字号大中小订阅

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今天看到一个排列组合的问题，拿来分享一下。

有兴趣的友友们回复时，写下步骤。

我现在的知识都扔回校园了。

从A点到D点，只能向上或向右走，途中经过 B 但不能经过 C，请问有几种方法？排列组合趣题 - 怀念曾经的妳 - 浮生若尘

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