Data Sufficiency

试题详情

题目:

When 15n, where n is a positive integer, is divided by 6, the remainder is x. What is the value of x?
(1)   When n is divided by 2, the remainder is 0.
(2) When n is divided by 3, the remainder is 0.

选项:

答案:

A

提问:

不会做这道题,同余的知识学过但不知道怎么用
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提问:

PS
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