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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。

381 At a certain university, 60% of the professors are women, and 70% of the professors are tenured. If 90% of the professors are women, tenured, or both, then what percent of the men are tenured?
382 $(1\frac{4}{5})^{2}$=
383 If points A and B are randomly placed on the circumference of a circle with radius 2, what is the probability that the length of chord AB is greater than 2?
384 There are 10 people in a room. If each person shakes hands with exactly 3 other people, what is the total number of handshakes?
385 What is the sum of all possible solutions of the equation$|x + 4|^{2} - 10|x + 4| = 24?$
386 When a company places a wholesale order on coffee cups with the company logo, they pay $692 for 80 cups. When Phil wants to buy just one such cup, it costs him$12.50. How much above the wholesale price per cup is he paying?
387 The average (arithmetic mean) of two numbers is 4x. If one of the numbers is y, then the value of the other number is
388 If 4x = 14 and xy = 1 then y =
389 The price of a pair of sneakers was \$80 for the last six months of last year. On January first, the price increased 20%. After the price increase, an employee bought these sneakers with a 10% employee discount. What price did the employee pay?
390 Fifteen points are evenly spaced on the circumference of a circle. How many combinations of three points can we pick from these 15 that do not form an equilateral triangle?
391 If it takes Bill 8 minutes to peel 30 potatoes, how many potatoes can he peel in one hour?
392 If three primes are randomly selected from the prime numbers less than 30 and no prime can be chosen more than once, what is the probability that the sum of the three prime numbers selected will be even?
393 ${8×10^{40}}\over1×10^{10}$=
394 In the game of Dubblefud, red chips, blue chips and green chips are each worth 2, 4 and 5 points respectively. In a certain selection of chips, the product of the point values of the chips is 16,000. If the number of blue chips in this selection equals the number of green chips, how many red chips are in the selection?
395 How many integers from 1 to 900 inclusive have exactly 3 positive divisors?
396 A sequence is defined by$s_n = (s_{n – 1} – 1)(s_{n – 2})$ for n > 2,and it has the starting values of$s_1 = 2$ and $s_4 = 9.$ All terms are positive. Find the value of $s_6$.
397 $(2xy^{2})*(7x^{3}y^{3})$=
398 If n = 2×3×5×7×11×13×17, then which of the following statements must be true?I. $n^{2}$ is divisible by 600 II. n + 19 is divisible by 19III.$\frac{n+4}{2}$ is even
399 In the diagram above, A & B are the centers of the two circles, each with radius r = 6, and ∠A = ∠B = 60°. What is the area of the shaded region?
400 How many integers between 1 and$10^{21}$ are such that the sum of their digits is 2?

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