原数字是 87912 ,反过来以后就是 21978 ,
计算一下可知 87912=21978*4.算了，采纳吧
Can you find a five digit number which when you place a 7 at the
Can you find a five digit number which when you place a 7 at the
（接上）beginning to make a new number is 4 times larger than when you place the 7 at the end?
求翻译和解题过程
（接上）beginning to make a new number is 4 times larger than when you place the 7 at the end?
求翻译和解题过程
英语人气：279 ℃时间：2020-01-27 18:55:29
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