跪求数学大神帮忙解题。万分感谢。

flpalmbeach · 发表于 2017-10-24 17:17:53

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.

选B

In the rectangular coordinate system shown above, does the line k (not shown) intersect quadrant II?

(1) The slope of k is -61

(2) The y-intercept of k is -6.

选A

zpfff · 发表于 2017-10-24 17:24:27

第一题：除了2以外所有质数都是奇数，odd-1=even
第二题：画画图感受一下就知道了，k小于零一定过2/4象限

flpalmbeach · 发表于 2017-10-24 18:11:45

zpfff 发表于 2017-10-24 17:24
第一题：除了2以外所有质数都是奇数，odd-1=even
第二题：画画图感受一下就知道了，k小于零一定过2/4象限 ...

谢谢你噢。祝好运

所属分类: GMAT考试