GRE考试

根据网考网考试中心的统计分析，以下试题在2019/8/6日GRE考试习题练习中，答错率较高，为：89%
【单选题】In a group of 80 students, 24 are enrolled in geometry, 40 in biology, and 20 in both. If a student were randomly selected from the 80 students, what is the probability that the student selected would not be enrolled in either course
A、0.20
B、0.25
C、0.45
D、0.55
E、0.60

网考网参考答案：C，答错率：89%
网考网试题解析：
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