以下是德國人出的數學題:
可測試50歲以上中老年人的退化程度,及預防老人痴呆症。
您會幾題呢?
提示:
數字順序不能變,只能應用數學符號!!
(不得增加數字)

3 7 5 = 1
3 7 5 = 2
3 7 5 = 3
3 7 5 = 4
3 7 5 = 5
3 7 5 = 6
3 7 5 = 7
3 7 5 = 8
3 7 5 = 9
3 7 5 = 10

只做出一道,準備去老人院;做出三道,回家帶孫;做出五道,可繼續工作;做
出七道,可保持經理職位;全部做出,去大學做教授!
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originally written by Lin
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