[原创]后天考试，刚才做了一个PREP

RT

做了套模拟题

Q 51分 错3道

V27分 错17道

总分650

请问，如果真实考试，小弟正常发挥，能上600么？？

我认为

前20题 相对重要

小弟我阅读不太好，所以短期内着重联系了SR还有CR

阅读最后一篇4个选项 每个都蒙C 这样节约了不少时间，竟然还对了一个。

问大家道数学题

sets A B and C have some elements in common, If 16 elements are in both A and B,17 elements are in both A and C,and 18 elements are in both B and C, how many elements do all three of the sets A,B and C have in common?

1. of the 16 elements that are in both A and B,9 elements are also in C

2. A has 25 elements, B has 30 elements , and C has 35 elements.

答案A

1我肯定知道对，不过2是不对的，我忘记那个什么公式了，谁记得，如何得出2是不对的呢？？

楼主是做过PREP后在模拟的还是没有做过PREP模拟的?

以前没有做过PREP