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Magoosh题集

Magoosh针对GRE考试备考材料相对可以，其推出的GMAT模考题对时间固定GMAT考生来说，老师并不建议过多时间花费在该材料上。这些题可以作为词汇拓展训练。

181 Given that x $\neq$ 0, y $\neq$ 0, and (x+y) $\neq$ 0, is $\frac{y}{x}$ $\gt$ ${y}\over{x+y}$?Statement #1: x > –1Statement #2: y > –1
182 In nine independent trials, what is the probability that Outcome A happens at least once?Statement #1: The probability that Outcome A does not happen even once in any of the nine trials is 0.026Statement #2: the probability of Outcome A in a single trial is $\frac{1}{3}$
183 If${{w}\over{x+y}}=1$ , what is the value of${x+y}\over{y}$ ?(1) $\frac{x}{y}$ = $\frac{3}{2}$(2) $\frac{y}{w}$ = $\frac{2}{5}$
184 Is quadrilateral ABCD a square?(1) AB = BC = CD = DA(2) AC = BD 185 plane. Does line L pass through the Quadrant II? Statement #1: Line L has a positive slopeStatement #2: At its closest approach, Line L is never closer than 3 units to the origin.
186 If A is an integer, what is the value of A?Statement #1: 1,000,000 < $23^A$ < 10,000,000Statement #2:${7^{A+2}-7^A\over{48}}=7^A$
187 Is a positive?Statement #1:$a^6 < a$Statement #2: $a^5 < a$
188 A box contains red and blue balls only. If there are 8 balls in total, how many red balls are in the box?(1) If two balls are randomly selected without replacement, the probability that both balls are red is $\frac{5}{14}$(2) If two balls are randomly selected without replacement, the probability is $\frac{15}{56}$ that the first ball is red and the second ball is blue.
189 $x^n + x^n + x^n = x^{n+1}$What is the value of n?Statement #1:$x^n=9\sqrt3$ Statement #2: x = 3
190 In a certain class, the ratio of girls to boys is 5:4. How many girls are there?Statement #1: If four new boys joined the class, the number of boys would increase by 20%.Statement #2: If the number of girls increases by 50%, then after such an increase, the probability that a randomly chosen student would be a boy would be$\frac {8}{23}$
191 If x and y are positive integers, is x - y > ${x+y}\over{2}$ ?(1) y < x(2) x < 2y
192 Is x > 0?(1) $({x+y})^2$ < $({x-y})^2$(2) x + y < x - y
193 Given that x $\neq$ 0, is $\sqrt{x}\gt\sqrt{x}$?Statement #1: x < 1Statement #2: x > –1
194 Is x < y ?(1) y =$x^{-3}$(2) x < 0
195 If$\sqrt{k}$ is not an integer, then is K a prime number?Statement #1: K < 10Statement #2: K < 5
196 If line k in the xy–coordinate plane has slope$\frac {-3}{2}$, does line k pass through the point (12, -13)?(1) The point (6, -2) lies on line k.(2) The point (2, 4) lies on line k.
197 What is the value of x?(1) w + y = 118(2) 2y - w = 56 198 A group of N students will be randomly seated in a row of N chairs. What is the probability that Beth, one of the students, will be at the extreme right-hand end of the row?Statement #1: N is an odd prime numberStatement #2: the probability that Steve, another one of the students, is at the extreme left-hand end of the row is$\frac{1}{13}$
199 Given that x $\neq$5, is $x\gt{{1}\over({x-5})^2}?$Statement #1: x > 0Statement #2: x > 10
200 What is the value of x?(1) $\sqrt{x^4}=9$(2) $\sqrt{x^2}=-x$

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