考试吧为您整理了“2016年新GRE数学模拟试题(二)”,更多关于GRE考试模拟试题相关内容,请访问考试吧GRE考试网。
查看汇总:2016年新GRE数学模拟试题汇总
1. A,B,C,D,E,F排在1,2,3,4,5,6六个位置上,问A不在1, B不在2, C不在3的情况下,共有多少种排法?
(A) 720
(B) 450
(C) 180
(D) 216
(E) 320
2. 一直线L过点A(5,0), B(0,2), 坐标原点为O, 点P(X,Y)为三角形OAB中一点, 问:Y
(A) 1/4
(B) 3/8
(C) 1/2
(D) 5/8
(E) 3/4
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
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
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
6. 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%
参考答案:
1.解:首先考虑总的可能性为,再考虑A在1,B在2,C在3的可能性分别为,中重复计算了三者交集,分别为AB在1,2,AC在1,3,BC在2,3,所需将三种情况加回,即,但考虑这三种加回的交集又重复计算了ABC在1,2,3的情况,所以应减去P33
2.解:在平面直角坐标系中,T
3.解:设总数为x,设incorrect paper record有y, incorrect electric record有z,则:
x·y·60%=3%·x y=5%
x·z·75%=3%·x z=4%
则,两者至少有一个错误的百分比为5%+4%-3%=6%,所正确答案为94%
4.解:1/20(14-2.5)+1/30(14-x)=1,得出x=1.25
5.解:划出图表来可以一目了然:A, B均不发生的最大概率为40%,最小概率为0.
6.解:A和B的并集为:54%+48%-30%=72%,所C为28%.
2015考研英语阅读寻找外星人
2015考研英语阅读可见光通信
2015考研英语阅读意大利的支付习惯
2015考研英语阅读矿石之战
2015考研英语阅读流感
2015考研英语阅读欧洲的僵尸银行
2015考研英语阅读法国的钢铁制造
2015考研英语阅读人类繁衍
2015考研英语阅读苹果股价合理吗
2015考研英语阅读身为人父的喜悦
2015考研英语阅读津巴布韦的矿业公司
2015考研英语阅读英国律师事务所
2015考研英语阅读年长工人更受欢迎
2015考研英语阅逆势而变
2015考研英语阅读可穿戴的计算设备
2015考研英语阅读比尔克林顿的忠告
2015考研英语阅读入侵物种繁衍与湮灭
2015考研英语阅读女性管理者
2015考研英语阅读亚洲的兴衰
2015考研英语阅读教授们的Facebook
2015考研英语阅读美国医疗改革遇阻
2015考研英语阅读他不是一个推销员
2015考研英语阅读腹地美景
2015考研英语阅读关节炎与肉毒杆菌
2015考研英语阅读小时代引热议
2015考研英语阅读无人机
2015考研英语阅读拼拼凑凑见真相
2015考研英语阅读仿生学
2015考研英语阅读航空运输业
2015考研英语阅读窃听风暴
不限 |
英语教案 |
英语课件 |
英语试题 |
不限 |
不限 |
上册 |
下册 |
不限 |