5x5-5/5=24

来源: 于 2008-12-25 19:20:57 [博客] [旧帖] [给我悄悄话] 本文已被阅读：次

(5-5/5-5/5-5/5-5/5)=1 (use 9 of them)
5/5=1 (pair of them)
To make the 1 useless, just multiply them.