2. 外语
  3. The table below shows the distribution of a group of 40 college students by gender and class. If one student is randomly select

The table below shows the distribution of a group of 40 college students by gender and class. If one student is randomly select

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问题 The table below shows the distribution of a group of 40 college students by gender and class.

If one student is randomly selected from this group, find the probability that the student chosen is
(a)not a junior
(b)a female or a sophomore
(c)a male sophomore or a female senior
选项
答案(a)21/40(b)7/10(c)9/40
解析
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