3^1=3,3^2=9,3^3=27,3^4=81,3^5=243,3^6=729,3^7=2187,3^8=6561...则3^2013的个位数字是?
A.3 B.9 C.7 D.1 请说明原因
人气：486 ℃ 时间：2019-10-10 01:22:28
解答
A 各位数字是四个一循环,用2013除以4 得到的余数再按顺序查就可以了 余数为1 即为3
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