大大们看下这个题目啊

bitsera · 发表于 2011-7-6 22:40:19

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If the integer n is greater than 1, is n equal to 2 ?

(1) n has exactly two positive factors.

(2) The difference of any two distinct positive factors of n is odd.
第二个条件什么意思没看懂啊

sdcar2010 · 发表于 2011-7-6 22:57:10

If both a and b are positive factors of n, then the difference between a and b is an odd number.

RayGT · 发表于 2011-7-7 01:37:52

c吧，条件一说明是质数。除了2以外的质数都是奇数，奇数减factor1是偶数。所以要满足条件二，只能是2

大大们看下这个题目啊

所属分类: GMAT考试

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