通分法，8911-（4+2+5）=792-11=781，玄学玄脉的。。。

来源: tianfangye 于 2012-12-01 06:05:04 [博客] [旧帖] [给我悄悄话] 本文已被阅读：次

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通分法，8*9*11-（4+2+5）=792-11=781，玄学玄脉的。。。