返回列表 发帖

TT GWD-2-11 帮我看看我的解题思路对不?

11. Is the sum of the integers x and y a prime number?

1. x is an even prime number. only 2 is an even prime integer.

2. y is a prime number between 10 and 20. there are 4 prime integers between 10 and 20, they are 11,13,17,19.

so the answer E - statements 1 and 2 together are not sufficient.

各位NN,给个您的意见。

收藏 分享

应该是选E,条件1和条件2相加,19(质数)21(合数)都满足,所以不充分。

TOP

yup,quite right.

TOP

返回列表

站长推荐 关闭


美国top10 MBA VIP申请服务

自2003年开始提供 MBA 申请服务以来,保持着90% 以上的成功率,其中Top10 MBA服务成功率更是高达95%


查看