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谜题/算术谜题/平方数字
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来自维基教科书，开放世界的开放书籍
<
谜题
|
算术谜题
谜题
|
算术谜题
| 平方数字
有一个四位数的整数
n
，
n
²的最后四位数字实际上是原来的数字
n
。
这个数是什么？
解答
分类
:
书籍：谜题
华夏公益教科书
