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2015年GMAT数学机经(汇总)

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与gmat数学机经换库相关的英语考试

2015GMAT考试数学机经

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2015GMAT考试数学机经

  只有考前勤加练习才能在考试得心应手。以下是出国留学网为大家整理的2015GMAT考试数学机经,希望能给大家提供帮助!

  51.(高频)99999^2-1^2 =?

  下面选项有10^5(10^4-2),10^5(10^5-2)其他都不靠谱

  解析:答案10^5*(10^5-2)

  平方差公式=10^5*(10^5-2)

  52. 分别从两列0 到9 中任选两个数,每一列一个数,乘积是偶数的概率

  解析:答案3/4

  只要其中一个是偶数就可以,所以符合条件的5*10+5*5=75.总个数为10*10=100.概率为3/4

  53. a^3 * b =even?

  1) ab=even

  2) a^2*b^2=even

  解析:答案D

  条件1:ab是偶数说明ab中至少有一个是偶数,偶数再乘以a^2依然是偶数

  条件2:与条件1相同

  54.根号[根号(x-2)-根号(4-x)] ,求x的取值范围

  解析:答案 3≤x≤4

  x-2≥0 , 4-x≥0 , x-2≥4-x ,解三个不等式,得3≤x≤4

  55. 一个圆柱体,底面半径r 和高h 都给了,然后说这个半径变为原来的3/2 则,体积怎么变化?

  解析:答案变为原来的9/4)

  V=πr^2, V新=π(3/2r^2)=9πr^2/4.所以新体积为原来的9/4

  56. 如图所示,圆心为o, AO交CD 于B点, 问AC是否等于CO

  1) AB垂直CD

  2) B为CD的中点



  解析:E

  三角形COD为等腰三角形,所以条件1和2都说明AB是CD的垂直平分线。想要证明AC=CO,要证明B是AO的中点,无法确定是否是中点。

  57. 三个人ABC 拥有什么东西(反正必须是整数)总数是705, 平均值等于中值么?

  1) B 拥有这个东西235

  2) 遗忘(等补充)

  解析:A

  平均值=705/3=235

  条件1,B有235个,则说明AC都有235个,或其中一个人少于235另外一个人多于235.中值为235,确定为等于平均值

  58. 给了一边的具体数字,求另一边,不难,30 度...

与gmat数学机经换库相关的英语考试

GMAT数学机经2015年2月

GMAT考试机经 2015GMAT考试 GMAT考试

  出国留学网为了让大家能在2015年2月的GMAT考试中更好的表现自己,更好的发挥,为大家精心整理了以下关于cargo对环境的影响的2015年2月GMAT数学机经,供大家参考!

  21. 给了一个式子(y-3)(y+2)-(y-5)(y+4)=n(y-1) 问n=? (式子等号左边的具体数字记不住了,形式是这样,一元二次方程,化简完是5(y-1))

  1) n^2=25

  2) n=5

  答案待更新...

  22. 一个Rectangular,长是宽的4倍,往里注水,一共注了多少立方Feet的水,数字问记不清了,大概102,112Feet这样,然后高是1.5feet, 求长。我算出来宽是2,长所以是8

  解析:V应该是24,答案2, 8)设宽为x,则长为4x。1.5*4x^2=V,算出x,既得宽,从而推出长。如果楼主算出的答案是对的话,V应该是24,而不是102,也不是112

  23. -3/4

  A.x B.x+3 C.X^2-3x D.X^3+...还有一个忘了。选的有X的立方那个。

  解析:注意是负分数,所以小偶数次方>大偶数次方>大奇数次方>小奇数次方,如-5/8. (-5/8)^2>(-5/8)^4>(-5/8)^3>(-5/8)^1。

  同时注意减负数和加负数。注意好以上两方面,就可以比出选项了

  24. A B两个机器,A完成工作要15小时,B完成工作要18小时。A自己先干了3小时(or 6小时记不清了),然后AB一起干了3小时,A就Break down了,问剩下的工作B单独做需要多久能完成。

  解析:如果确定A先干了6小时,则:

  6*1/15+3*(1/15+1/18)+x/18=1,解出x=4.2小时,即4小时12分

  25. 一个公司还是什么的,求今年的Profit比去年增加了百分之多少

  1) 今年Revenue增加了10%

  2) 今年Cost减少了4%

  解析:答案为E

  P=R-C P增加的=100%* [(R今-C今)-(R去-C去)]/ (R去-C去)

  1) R增加的为100%*(R今-R去)/R去=10%,不能算出profit增加的百分比

  2) C的变化为100%*(C今-C去)/C去=-40%,不能算出profit增加的百分比

  两个条件相结合,只能算出分母,不能算出分子,也不能确定。

  26. 好像以前见过的,一个Group,一共200人吧好像,有男女,问抽到的是65岁以上的男的,概率多少1. 男的占总数一个百分比 2. 65岁以上占总数的百分比。

  解析:

2015年2月GMAT数学机经

GMAT机经 GMAT考试 2015年GMAT考试
2015年2月GMAT数学机经

  为了让大家在2015年2月的GMAT考试中更好的发挥出自己的水平,出国留学网为大家整理了以下2015年2月GMAT数学机经,供大家参考!

  1. DS:圆内接等边三角形ABC,求ABC面积。(1)圆半径10 (2)AB为2乘根号3

  答案:选D

   解析: 确定是等边三角形, 圆心在三个高上(注意高与边长构成的三角形是有30度角的直角 )

  条件1:圆的半径为10,可以得出等边三角形高为15,边长为10 ,所以能求出

  条件二,同理,根据边长可以求出高,能求出

  故选D

  2. [(8/3)^0.5+(2/3))^0.5]/[(8/3)^0.5-(2/3))^0.5]求值,答案3

   解析:先化简再求值:上下同乘以分子

  ( + )/ ( - ) = (8/3+2*4/3+2/3)/2=6/2=3

  3. 2^(-5)+2^(-12)最接近以下哪个数。A 2的-5次方;B 2的-7次方;C 2的-10次方。。。我选的是A,2^(-5)[1+2^(-7)]

  解析:楼主的思路对,2^(-5)[1+2^(-7)],2^(-5)乘以了一个很接近1的数,所以还是2^(-5)

  4. 题目就给出那俩直角。然后说AB=BC=8,DC=2,AE=AD=13,求ABCDE的面积



  解析:(确定)如果按照图来看的话,AD=10,应该是AB=BC=8,DC=2,AE=DE=13

  S ADE=10*12/2=60 矩形面积=(2+8)*8/2=40。SABCED=60+40=100

  5.某容器为正圆柱体,底面积半径3inch(数字绝对失忆),高12inch,注水2/3,问水体积。没什么陷阱,就是很简单。

  解析:求圆柱体的体积的2/3。圆柱体体积等于底面积*高

  6. X+2被11除余数为0,35-y被11除余数为0,问X+Y被11除的余数。选0

  解析:X + 2 = 11m, 35-y=11n (m, n为正整数)

  X+y=11m-2+35+11n

  =11m+11n+33

  所以能被11整除。

  7. 半圆上有8个点,每个点的距离相等、直径1、三分钟走到弧的区间,车速15mile/hour。



  解析:走得距离15*3...

GMAT语法机经(十一)

GMAT语法机经 GMAT语法 GMAT考试

  下面是出国留学网GMAT频道整理的GMAT语法机经(十一),欢迎阅读。

  >>>点击进入GMAT语法机经汇总

  23. (BY Jocelynbest)第一题是关于什么 new york city bicycles的题,其他记不得了。

  1. A New York City ordinance of 1897 regulated the use of bicycles, mandated a maximum speed of eight miles an hour, required of cyclists to keep feet on pedals and hands on handlebars at all times, and it granted pedestrians right-of-way.

  (A) regulated the use of bicycles, mandated a maximum speed of eight miles an hour, required of cyclists to keep feet on pedals and hands on handlebars at all times, and it granted

  (B) regulated the use of bicycles, mandated a maximum speed of eight miles an hour, required cyclists to keep feet on pedals and hands on handlebars at all times, granting

  (C) regulating the use of bicycles mandated a maximum speed of eight miles an hour, required cyclists that they keep feet on pedals and hands on handlebars at all times, and it granted

  (D) regulating the use of bicycles, mandating a maximum speed of eight miles an hour, requiring of cyclists that they keep feet on pedals and hands on handlebars at all times, and granted

  (E) regulating the use of bicycles mandated a maximum speed of eight miles an hou...

GMAT语法机经(四)

GMAT语法机经 GMAT语法 GMAT考试

  下面是出国留学网GMAT频道整理的GMAT语法机经(四),欢迎阅读。

  >>>点击进入GMAT语法机经汇总

  GMAT语法机经(四)

  考点:

  1. more…than…

  as…as

  1). 固定搭配

  More…than…: more… rather than/compared with(wrong)

  As..as…: equally…as…(wrong)

  1. Shipwrecks are more likely to be found undisturbed at great depths than in shallow coastal waters, which exposes archaeological remains to turbulence and makes them accessible to anyone in scuba gear, whether they be archaeologist, treasure hunter, or sport diver.

  (A) than in shallow coastal waters, which exposes archaeological remains to turbulence and makes them accessible to anyone in scuba gear, whether they be

  (B) than in shallow coastal waters, where archaeological remains are exposed to turbulence and are accessible to anyone in scuba gear, whether

  (C) as opposed to shallow waters along the coast, where archaeological remains are exposed to turbulence and are accessible to anyone in scuba gear, including

  (D) instead of in shallow waters along the coast, which exposes archaeological remains to turbulence and makes them accessible to anyone in scuba gear, including an

  (E) instea...

GMAT语法机经汇总

GMAT语法机经 GMAT语法 GMAT考试

GMAT语法机经(十三)

GMAT语法机经 GMAT语法 GMAT考试

  下面是出国留学网GMAT频道整理的GMAT语法机经(十三),欢迎阅读。

  >>>点击进入GMAT语法机经汇总

  GMAT语法机经(十三)

  31.(BY sherrylinks )有考such……like错误搭配

  1. Humans have been damaging the environment for centuries by overcutting trees and farming too intensively, and though some protective measures, like the establishment of national forests and wildlife sanctuaries, having been taken decades ago, great increases in population and in the intensity of industrialization are causing a worldwide ecological crisis.

  (A) though some protective measures, like the establishment of national forests and wildlife sanctuaries, having been taken decades ago, great increases in population

  (B) though some protective measures, such as the establishment of national forests and wildlife sanctuaries, were taken decades ago, great increases in population

  (C) though some protective measures, such as establishing national forests and wildlife sanctuaries having been taken decades ago, great population increases

  (D) with some protective measures, like establishing national forests and wildlife sanctuaries that were taken decades ago, great increases in population

  (E) with some protective measures, s...

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