题目
there are 4 people ,A ,B,C and D .given that there is a 3-yuan difference in age between A and C,
there are 4 people ,A ,B,C and D .given that there is a 3-yuan difference in age between A and C,a 3-yuan difference B and D ,a 2-yuan difference between A and D and a 4-yuan difference between B and C ,what is the age difference between A and B
there are 4 people ,A ,B,C and D .given that there is a 3-yuan difference in age between A and C,a 3-yuan difference B and D ,a 2-yuan difference between A and D and a 4-yuan difference between B and C ,what is the age difference between A and B
提问时间：2020-07-26
答案
A和B差一岁啊
举一反三
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