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标题: 天山 7-32 [打印本页]

作者: knight9514    时间: 2006-1-30 07:00     标题: 天山 7-32

7-32

If x is a positive integer, is the remainder 0 when (3^x+1)/10?

1) x=3n+2, when n is a positive integer

2) x> 4

answer: E

my answer: D 好像没有符合的X。thanks!!


作者: lololo    时间: 2006-1-30 07:40

从给出条件,是没有一定的压,所以才是E




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