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3的2013次方的末位数是多少

更新时间: 2020-10-03 00:00:00     

这是一道找规律的题:3的1次方的个位是3,3的2次方的个位是9,3的3次方的个位是7,3的4次方的个位是1,3的5次方的个位是3,3的6次方的个位是9,3的7次方的个位是7,3的8次方的个位是1。这是一个周期为4的周期问题,2013除以4等于503余1。所以3的2013次方的个位和3的1次方的个位相同,是3。

关键词: 次方 位数 多少

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