1/2; 1/4; 1/5, each times 20, you will get 10,4,5, (their sum is 19).
回复:这个的确就是绕点小弯,小时候看的一个阿拉伯的数学故事现在还没明白
本帖于 2010-01-25 03:21:44 时间, 由版主 笑比哭好 编辑
1/2; 1/4; 1/5, each times 20, you will get 10,4,5, (their sum is 19).
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