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大家公式怎么推的,我的公式有错吗?我推出来是这样的,帮我看看有什么错好不?以N=6为例 结果为[C(15,5)+C(15,6)+...+C(15,15)]-6*[C(10,5)+C(10,6)+...+C(10,10)] 请帮我看看,谢谢大家了 Followed by: Post your reply here: |
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