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PREP07 Test 2 PREP07 Test 1 Manhattan Magoosh KMFPS 排列组合 几何 应用题 代数 数论 OG20 OG21 OG20-数学分册 OG20-语文分册 OG19-数学分册 OG19 OG18-数学分册 OG18 OG17 OG16 OG15 OG12 OG2022

《(2017)GMAT官方指南》 OG 17

《（2017）GMAT官方指南（综合）》是GMAC（GMAT考试命题机构）中国大陆单家授权版本，是GMAT考试必备的专业辅导书。书中提供900余道全真试题，新增61道语文、61道数学以及8道在线综合推理试题，涵盖GMAT考试所有题型，并配有全面的答案解析。 其中，OG17的PS部分共有 230 题，全部经由老师核对确认并标上题号及难度（根据官方标准划分）。

题目列表

序号 题目内容
221 Xavier, Yvonne, and Zelda each try independently to solve a problem. If their individual probabilities for success are $$\frac{1}{4}$$, $$\frac{1}{2}$$ and $$\frac{5}{8}$$ respectively, what is the probability that Xavier and Yvonne, but not Zelda, will solve the problem?
222 if $$\frac{1}{x}-\frac{1}{x+1}=\frac{1}{x+4}$$ then x could be
223 $$(\frac{1}{2})^{-3}(\frac{1}{4})^{-2}(\frac{1}{16})^{-1}=$$
224 List T consists of 30 positive decimals, none of which is an integer, and the sum of the 30 decimals is S. The estimated sum of the 30 decimals, £, is defined as follows. Each decimal in T whose tenths digit is even is rounded up to the nearest integer, and each decimal in T whose tenths digit is odd is rounded down to the nearest integer; E is the sum of the resulting integers. If $$\frac{1}{3}$$ of the decimals in T have a tenths digit that is even, which of the following is a possible value of E - S ?I.-16II.6III.10
225 In a certain game, a large container is filled with red, yellow, green, and blue beads worth, respectively, 7, 5, 3, and 2 points each. A number of beads are then removed from the container. If the product of the point values of the removed beads is 147,000, how many red beads were removed?
226 Of the 200 students at College T majoring in one or more of the sciences, 130 are majoring in chemistry and 150 are majoring in biology. If at least 30 of the students are not majoring in either chemistry or biology, then the number of students majoring in both chemistry and biology could be any number from
227 If $$5-\frac{6}{x}=x$$ then x has how many possible values?
228 Seed mixture X is 40 percent ryegrass and 60 percent bluegrass by weight; seed mixture Y is 25 percent ryegrass and 75 percent fescue. If a mixture of X and Y contains 30 percent ryegrass, what percent of the weight of the mixture is X ?
229 How many of the integers that satisfy the inequality $${\frac{(x+2)(x+3)}{x-2}}\ge{0}$$ are less than 5 ?
230 The value of $$\frac{({2}^{-14}+{2}^{-15}+{2}^{-16}+{2}^{-17})}{5}$$ is how many times the value of$${2}^{-17}$$?
231 An amusement park currently charges the same price for each ticket of admission. If the current price of admission were to be increased by $3, 12 fewer tickets could be bought for $160, excluding sales tax. What is the current price of each ticket?
232 If an integer n is to be chosen at random from the integers 1 to 96, inclusive, what is the probability that n(n + 1)(n + 2) will be divisible by 8?
233 The numbers x and y are three-digit positive integers, and x + y is a four-digit integer. The tens digit of x equals 7 and the tens digit of y equals 5. If x < y, which of the following must be true?I.The units digit of x + y is greater than the units digit of either x or y.II.The tens digit of x + y equals 2.III.The hundreds digit of y is at least 5.
234 In the xy-plane, the vertices of a triangle have coordinates (0, 0), (3, 3), and (7, 0). What is the perimeter of the triangle?
235 If S is the sum of the reciprocals of the consecutive integers from 91 to 100, inclusive, which of the following is less than S?I.$$\frac1 8$$II.$$\frac1 9$$III. $$\frac1 {10}$$
236 S is a set containing 9 different numbers.T is a set containing 8 different numbers, all of which are members of S. Which of the following statements CANNOT be true?

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