2018年1月20日GRE数学机经满分必看 查遗补缺零失误不可不看
- 2018年01月09日17:29 来源：小站教育作者：小站GRE编辑
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2018年1月过半，考生们就将迎来1月20日的GRE考试。小编相信许多参加1月20日GRE考试的同学都抱着年初就搞定GRE的美好愿望，但能否如愿以偿大家还需要多加努力。考前冲刺看看机经当然也是再好不过的选择。为了帮助大家更顺利地备考1月20日的GRE考试，下面小编就为大家带来小站GRE点题专家组精心整理的最新2018年1月20日GRE机经。下面是GRE数学预测机经，一起来看！
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题目
1. A box contains 100 balls, numbered from 1 to 100.If three balls are selected at random and with replacement from the box, what is the probability that the sum of the three numbers on the balls selected from the box will be odd?
A. 1/4
B. 3/8
C. 1/2
D. 5/8
E. 3/4
答案：C
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2. There are 1200 respondents to a poll, each favoring their preference for candidates A,B, and C. 54% favored A, 48% favored B, and 42% favored C, and there is 30% favored both A and B. What’s the largest possible number of respondents favoring C, but not C&B, nor C&A?
A. 25%
B. 30%
C. 28%
D. 38%
E. 40%
答案：C
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3. In an insurance company, each policy has a paper record and an electric record. For those policies having incorrect paper record, 60% also having incorrect electric record; For policies having incorrect electric record, 75% also having incorrect paper record.3% of all policies have both incorrect paper and incorrect electric records. If we randomly pick out one policy, what’s the probability that the one having both correct paper and correct electric records?
A. 0.80
B. 0.94
C. 0.75
D. 0.88
E. 0.92
答案：B
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4. If Bob can do a job in 20 days and Jane can do the job in 30 days, they work together to do this job and in this period, Bob stop work for 2.5 days and Jane stop work for x days, and the job be finished for 14 days, what is x?
A. 1.6
B. 3.2
C. 1.5
D. 1.25
E. 1.15
答案：D
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5. The probability of A is 60% and the probability of B is 50%, what is the most possible probability that neither A nor B would happen?
A. 0.80
B. 0.40
C. 0.75
D. 0.55
E. 0.68
答案：B
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