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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。

81 Point A in the xy-coordinate system is shown below. Given two other points B (4a, b) and C (2a, 5b), what is the area of triangle ABC in terms of a and b?
82 If $k \neq 0$ and $k \neq±1$, and $({k^{3}×k×k^{4}})^{2}\over{k^{n}×k}$=$k^{14}$, then n =
83 In the xy-coordinate system, line k has y-intercept 12 and an x-intercept greater than zero. If the area of the triangular region enclosed by line k and the two axes is 30, what is the slope of line k?
84 In the infinite sequence 13, 17, 21, 25, 29, . . . , where each term is 4 greater than the previous term, the 46th term is
85 If the line passes through the origin, what is the value of k? 86 If $2^{A} = 3 and 2^{B} = 5, then 2^{2A + B} =$
87 Line P has a positive slope and a positive y-intercept. Line Q also has a positive slope and a positive y-intercept. The two slopes and the two y-intercepts are four different numbers, none equal. Lines P & Q have a single intersection point --- what is the full set of possible quadrants in which the intersection point could be?
88 In a group of children, the average (arithmetic mean) weight of the boys is 60 pounds, and the average weight of the girls is 48 pounds. If the average weight of all of the children in the group is 50 pounds, what is the ratio of the number of boys to the number of girls?
89 k is a positive number. If k is twice its reciprocal, and j is twice k, then jk =
90 To create paint with a certain shade of gray, one must combine 2.016 liters of black paint with every one liter of white paint. Approximately how many liters of white paint must be combined with 350 liters of black paint to create the certain shade of gray?
91 What is the decimal equivalent of$(\frac{2}{5})^{5}$?
92 If $f(x) = x^{2} + 4$ and f(2k) = 36, then which of the following is one possible value of k?
93 An office has 6 employees; there are 5 female employees and 1 male employee. In how many ways can a 3-person committee be created if the committee must include the male employee?
94 What is the value of y?Note: Figure not drawn to scale 95 If the average (arithmetic mean) of x, y, and 20 is 11, then the average of 2x + 3, 2y - 4, and 8 is
96 If $xy \neq 0$ , and 75 percent of x equals 125 percent of y , which of the following is true?
97 $(2\sqrt{3}+\sqrt{5})(2\sqrt{3}-\sqrt{5})$
98 If the sum of two numbers is 6, and the sum of their reciprocals is $\frac{15}{8}$, what is the product of the two numbers?
99 Line k is in the rectangular coordinate system. If line k is defined by the equation 3y = 2x + 6, and line k intersects the x-axis at point (a,b), then what is the value of a?
100 Given f(x) = 3x – 5, for what value of x does 2*[f(x)] – 1 = f(3x – 6) ?

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