If the number 52,1n9, where n represents the tens digit, is a multiple of 3, then the value of n could be which of the following?_出国考试答疑器_GMAT_试题

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题目：

If the number 52,1n9, where n represents the tens digit, is a multiple of 3, then the value of n could be which of the following?

选项:

A、6

B、5

C、3

D、1

答案:

D

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