2. 外语
  3. At College C there are from 2 to 4 introductory philosophy classes each semester, and each of these classes has from 20 to 30 st

At College C there are from 2 to 4 introductory philosophy classes each semester, and each of these classes has from 20 to 30 st

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问题 At College C there are from 2 to 4 introductory philosophy classes each semester, and each of these classes has from 20 to 30 students enrolled. If one semester 10 percent of the students enrolled in introductory philosophy failed, what is the greatest possible number who failed?
选项 A、12
B、10
C、8
D、6
E、3
答案A
解析 学院C每学期开2到4个班的哲学导论，每个班的在册学生为20～30人。若某一学期有10％的选哲学导论课的学生不及格，问最多有多少人不及格?
解：本题的正确答案为(A)。因为不及格的比例已经给出，所以不及格最多的情况是有尽可能多的学生选哲学导论课，也即学院C每学期开设四个哲学导论班，每个班有30人选修，这样不及格人数为4×30×10％=12人。
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