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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。

1 Which of the following sets of numbers has the greatest standard deviation?
2 When positive integer k is divided by 5, the remainder is 2. When k is divided by 6, the remainder is 5. If k is less than 40, what is the remainder when k is divided by 7?
3 When positive integer k is divided by 6 the remainder is 3. Which of the following CANNOT be an even integer?
4 Which of the following is equivalent to${2x^2+8x-24}\over{2x^2+20x-48}$ for all values of x for which both expressions are defined?
5 Don has x marbles. If y marbles are white, what percent of Don’s marbles are NOT white?
6 ${\frac{a}{b}+1}\over{\frac{c}{b}}$ In the expression above, a, b and c are different numbers and each is one of the numbers 2, 3 or 5. What is the greatest possible value of the expression?
7 If$x^2 - y^2 = 12$ and x - y = 4, then x =
8 In the xy-coordinate system, line k has slope $\frac{1}{2}$ and passes through point (0, 5). Which of the following points cannot lie on line k?
9 In the county of Veenapaniville, there are a total of 50 high schools, of three kinds: 25 public schools, 16 parochial schools, and 9 private independent schools. These 50 schools are divided between three districts: A, B, and C. District A has 18 high schools total. District B has 17 high schools total, and only two of those are private independent schools. If District C has an equal number of each of the three kinds of schools, how many private independent schools are there in District A?
10 If the areas of the 4 squares are 50, 32, 18 and 12, what is the ratio of the small shaded portion to the area of the large shaded portion?Note: Figure not drawn to scale
11 In order to qualify for the year-end tennis tournament, Sam must win at least 60 percent of his matches this year. Presently Sam has won 14 of his 18 matches. Of Sam’s 13 matches remaining in the year, what is the least number that he must win in order to qualify for the year-end tournament?
12 A retailer purchases shirts from a wholesaler and then sells the shirts in her store at a retail price that is 80 percent greater than the wholesale price. If the retailer decreases the retail price by 30 percent this will have the same effect as increasing the wholesale price by what percent?
13 On Monday, the regular price of a widget was discounted by 25 percent. On Tuesday, the reduced price was discounted by 50 percent. If the final price was $60, what was the regular price? 14 If the average (arithmetic mean) of 24 consecutive odd integers is 48, what is the median of the 24 numbers? 15 If AD = 3x, AE = 5x, EB = y and DC = 5y, what is the ratio of the area of triangle DEC to the area of rectangle ABCD ?Note: Figure not drawn to scale 16 If x = $\frac{7}{9} - \frac{15}{18} + \frac{10}{12} then{ (1-x)}^2 =$ 17 For a long time, the price of a certain console remained the same. Because of new tariffs, the price of this console increased by 50% last week, and stayed at this new level. This week, Amanda purchased the console with a 50%-off coupon. Amanda paid$240. What was the original price, before the last week's price increase?
18 If 2x - 3y = 6, then 6y - 4x =
19 Increasing the original price of a certain item by 25 percent and then increasing the new price by 25 percent is equivalent to increasing the original price by what percent?
20 In a certain town in Connecticut, the ratio of NY Yankees fans to NY Mets fans is 3:2, and the ratio of NY Mets fans to Boston Red Sox fans is 4:5. If there are 300 baseball fans in the town, each of whom is a fan of exactly one of those three teams, how many NY Mets fans are there in this town?

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