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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。

221 If 2x - y = 10 and$\frac{x}{y} = 3$, then x =
222 Walking at a constant rate of 8 kilometers per hour, Juan can cross a bridge in 6 minutes. What is the length of the bridge in meters? (1 kilometer = 1000 meters)
223 If$8^{5}x4^{6}\over16^{n}$=$32^{1-n}$then n=
224 If square ABCD has area 25, and the area of the larger shaded square is 9 times the area of the smaller shaded square, what is the length of one side of the smaller shaded square?Note: Figure not drawn to scale 225 In the figure below, ∠ADE = 60°, ∠EFC = 40°, and ∠DAE = 55°. If AB || CD, what is the value of x?Note: Figure not drawn to scale 226 ${1}\over{1+{{1}\over1-\frac{1}{3}}}$
227 If a, b, c, d, e and f are integers and (ab + cdef) < 0, then what is the maximum number of integers that can be negative?
228 If$2^{k} = 3, then 2^{3k+2} =$
229 If $72^{4}$ is the greatest common divisor of positive integers A and B, and $72^{6}$is the least common multiple of A and B, then AB=
230 If k is the greatest positive integer such that$3^{k}$ is a divisor of 15! then k =
231 The big outside square has an area of 84, and the dots are all equally spaced, forming smaller squares. What is the sum of the areas of the shaded regions?
232 Which of the following is the correct ordering of $2\sqrt{13},4\sqrt{3},5\sqrt{2}$ and$3\sqrt{6}$ ?
233 W, X, Y and Z each represent a different number. If the sum of each column is shown beneath that column, and the sum of each row is shown beside that row, then n = 234 A box contains 10 pairs of shoes (20 shoes in total). If two shoes are selected at random, what is the probability that they are matching shoes?
235 In Dewey Elementary School, there are two second-grade classes: class A has 35 students and class B has 45 students. If 40% of the students in class A walk to school, and 80% of the students in class B walk to school, what percent of all the students in the second-grade at Dewey Elementary walk to school?
236 Solution X is 10 percent alcohol by volume, and solution Y is 30 percent alcohol by volume. How many milliliters of solution Y must be added to 200 milliliters of solution X to create a solution that is 25 percent alcohol by volume?
237 Diana invested $61,293 in an account with a fixed annual percent of interest, compounding quarterly. At the end of five full years, she had$76,662.25 in principal plus interest. Approximately what was the annual percent rate of interest for this account?
238 Set K consists of all fractions of the form${ x}\over({x+2})$where x is a positive even integer less than 20. What is the product of all the fractions in Set K ?
239 The sum of k consecutive integers is 41. If the least integer is -40, then k =
240 The entire contents of a full sack of flour can be used to make 15 cupcakes and 8 pizzas. The same full sack of flour can be used to make 7 cupcakes and 14 pizzas. If a full sack of flour is used to make only pizzas, how many pizzas can be made?

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