Can you find a five-digit number which four times its revers

问题描述:

Can you find a five-digit number which four times its reverse?
1个回答 分类:数学 2014-10-02

问题解答:

我来补答
想到了!
原数字是 87912 ,反过来以后就是 21978 ,
计算一下可知 87912=21978*4.
 
 
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