回複：關於:13個球秤3次,找出異常球並指出輕重!?

來源: 於 2010-05-03 17:54:46 [舊帖] [給我悄悄話] 本文已被閱讀：次

You are great.If you can do this by heart and not old,you could become a math prof. I like do questions by heart,so, a lot of mistakes,I'm sorry.Good luck.