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[Problem Solving]

试题详情

题目:

Of the 300 subjects who participated in an experiment using virtual-reality therapy to reduce their fear of heights, 40 percent experienced sweaty palms, 30 percent experienced vomiting, and 75 percent experienced dizziness. If all of the subjects experienced at least one of these effects and 35 percent of the subjects experienced exactly two of these effects, how many of the subjects experienced only one of these effects?

选项:

A、105
B、125
C、130
D、180
E、195

答案:

D

提问:

这道题找不到画TT图的思路,也求不出来,麻烦老师解答一下,谢谢

解答:

点赞0
阅读4283
解答: 徐小梅

提问:

OG2020,208.老师我昨天问了2020的142题,您说让我找一个题您来讲文氏图,二维表格和集合。这道题用TT图明显不好做(因为有三个对象),所以应该是画圈圈或者用集合的概念来解题更快吧?麻烦老师讲解。

解答:

点赞0
阅读4109
解答: 徐小梅老师

提问:

请问如果一定要用文氏图做应该怎么做?

解答:

点赞0
阅读4228
解答: ken@boost.org.cn老师

提问:

这道题找不到画TT图的思路,也求不出来,麻烦老师解答一下,谢谢

解答:

点赞0
阅读4284
解答: 徐小梅老师

提问:

怎么算不对。。。

解答:

点赞1
阅读4113
解答: sysadmin老师

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