1+11+111+1111+...+111...11(2004个一)的百位数字是多少
人气:153 ℃ 时间:2020-02-05 15:31:10
解答
个位2004个1所以百位不会进
十位2003个1所以百位不会进
百位2002个1所以百为2.
千位2001个1,再加个位(2004)进2为3.
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