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[Problem Solving]
试题详情
题目：
The table gives three factors to be considered when choosing an Internet service provider and the percent of the 1,200 respondents to a survey who cited that factor as important. If 30 percent of the respondents cited both "user-friendly" and "fast response time," what is the maximum possible number of respondents who cited "bargain prices," but neither "user-friendly" nor "fast response time?"
选项:
A、312
B、336
C、360
D、384
E、420
答案:
A
提问：
请问徐小梅老师，本题是不是用三者实际数量=三者各自数量之和-两两交集+三者交集这个知识点去做呢？若是，三者交集怎么算呢？30%应该是两两交集吧
解答：
点赞0
阅读1220
提问：
请问徐小梅老师，本题是不是用三者实际数量=三者各自数量之和-两两交集+三者交集这个知识点去做呢？若是，三者交集怎么算呢？30%应该是两两交集吧
解答：
点赞0
阅读1221
提问：
数学的PS题，看不懂~~
解答：
点赞-1
阅读1550
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