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In a certain two-digit number the units' digi

2022-08-05 19:42:29 问答库 阅读 171 次

问题详情

In a certain two-digit number, the units" digit is twice the tens" digit.
Column A Column B
The tens" digit 5
A.if the quantity in Column A is greater
B.if the quantity in Column B is greater
C.if the two quantity are equal
D.if the relationship cannot be determined from the information given请帮忙给出正确答案和分析,谢谢!

参考答案

正确答案:B
解析:在某个两位数(two-digitnumber)中,个位数字是十位数字的2倍。解:本题的正确答案是(B)。units’digit指个位的数字;tens’digit指十位的数字。个位数字是十位数字的2倍,那么个位数字只可能是:2,4,6,8;十位数字只可能是:1,2,3,4,否则将无法满足上面关系。

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