2. 外语
  3. In a certain two-digit number, the tens’ digit is triple the units’ digit, this two-digit number can have how many different pos

In a certain two-digit number, the tens’ digit is triple the units’ digit, this two-digit number can have how many different pos

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问题 In a certain two-digit number, the tens’ digit is triple the units’ digit, this two-digit number can have how many different possible values?
选项 A、5
B、4
C、6
D、3
E、8
答案D
解析 两位数中十位是个位的3倍，那么可能有31，62，93这三个数。
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