1
一个两位数加上自身的九倍,结果为一百.那么他各位数相加是多少?
两位数是10嘛,于是答案是1.
a double-digit number plus nine times of its ones is 100.what is sum of its figures on its digits.
a double-digit number plus nine times of its ones is 100.what is sum of its figures on its digits.
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要结果
数学人气：673 ℃时间：2020-03-27 06:22:18
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