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标题: 求助- math-online FF [打印本页]

作者: adamkchim 时间: 2008-4-8 02:50
标题: 求助- math-online FF

if y=/=3 and 3x/y is a prime integer greater than 2, which of the following must be true?

1. x=y

2. y=1

3. x and y are prime integers.

A. none

B.1 only

C. 2 only

D 3 only

E. 1 and 3

answer: A

I think the answer is B.

Thanks in advance!

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