ai: skilled employees are more harmful than beneficial to the company based on team works
aa: 电子版的书越来越多, 而且有个 survey .....所以公司应该投资电子版的 literary classics.
数学有几道好像挺费时的...
* define as x*y=x+y-xy ask rt=0?
(1) r*t=0
(2) rt=0
我选 e, 因为 rt 有可能同时为0 ｏｒ２
response frequency
2 10
1 15
0 35
-1 17
-2 40
total : xxx (左列数字准确, 佑列不准)
ask the sum of products of response with its frequency. 总之我的最后答案是 -32
还有一道...
一个department, either accounting or finance professors. 2/3 professors are accounting professors ask: what is the ratio of the total number of professors do outside consulting to the total number of professors do ont do outside consulting.
(1) 在 finance 的教授中, 在外左 consulting 的佑 1/3
(2) 在外做 consulting 的 accounting professors 和 finance professors 的比 是一个常数
应选 b
