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
人气：471 ℃ 时间：2019-09-24 19:34:56
解答
A和B差一岁啊
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