| 题号 |
题目内容 |
平均正确率 |
操作 |
PS-051zik |
The population of City X is 50 percent of the population of City Y. The population of City X is what percent of the total population of City X and City Y? |
95% |
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DS-e51xxk |
Guy's net income equals his gross income minus his deductions. By what percent did Guy's net income change on January 1, 1989, when both his gross income and his deductions increased?[br/](1)Guy’s ... |
81% |
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PS-f3241k |
Each participant in a certain study was assigned a sequence of 3 different letters from the set {A, B, C, D, E, F, G, H}. If no sequence was assigned to more than one participant and if 36 of the p... |
69% |
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PS-e4242k |
Of the total amount that Jill spent on a shopping trip, excluding taxes, she spent 50 percent on clothing, 20 percent on food, and 30 percent on other items. If Jill paid a 4 percent tax on the clo... |
88% |
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DS-031tqk |
If x and y are positive, is [math]x^3 ＞ y[/math]?[br/](1)[math]sqrt x ＞ y[/math][br/](2)x ＞ y |
69% |
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PS-7c20uk |
The infinite sequence [math]a_1[/math], [math]a_2[/math],…, [math]a_n[/math],… is such that [math]a_1 = 2[/math], [math]a_2 = -3[/math], [math]a_3 = 5[/math], [math]a_4 = -1[/math], and [math]a_n =... |
93% |
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PS-cb243k |
For a certain race, 3 teams were allowed to enter 3 members each. A team earned 6 - n points whenever one of its members finished in nth place, where 1 ≤ n ≤ 5. There were no ties, disqualification... |
58% |
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PS-91244k |
At a certain food stand, the price of each apple is ￠ 40 and the price of each orange is ￠ 60. Mary selects a total of 10 apples and oranges from the food stand, and the average (arithmetic mean)... |
67% |
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DS-3f1xzk |
Professor Vasquez gave a quiz to two classes. Was the range of scores for the first class equal to the range of scores for the second class?[br/](1)In each class, the number of students taking the ... |
92% |
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DS-d11y0k |
If x and y are positive integers, what is the value of x?[br/](1)[math]3^x5^y = 1,125[/math][br/](2)y = 3 |
75% |
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PS-02245k |
If |d - 9| = 2d, then d = |
90% |
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PS-1d24jk |
There are 11 women and 9 men in a certain club. If the club is to select a committee of 2 women and 2 men, how many different such committees are possible? |
91% |
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DS-dd1y1k |
Is the measure of one of the interior angles of quadrilateral ABCD equal to 60 degrees?[br/](1)Two of the interior angles of ABCD are right angles.[br/](2)The degree measure of angle ABC is twice t... |
41% |
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DS-191y2k |
$10,000 is deposited in a certain account that pays r percent annual interest compounded annually, the amount D(t), in dollars, that the deposit will grow to in t years is given by [math]D(t) = 10,... |
89% |
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DS-351y3k |
If a and b are integers, is b even?[br/](1)3a + 4b is even.[br/](2)3a + 5b is even. |
75% |
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DS-0f1y4k |
The area of square S is equal to the area of rectangle R. What is the perimeter of square S?[br/](1)The length of one of the sides of rectangle R is twice the length of a side of square S.[br/](2)T... |
70% |
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DS-8d1x4k |
[img]1102.jpg[/img][br/]In the figure, points A, B, C, D, and E lie on a line. A is on both circles, B is the center of the smaller circle, C is the center of the larger circle, D is on the smaller... |
63% |
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PS-e2203k |
A certain company that sells only cars and trucks reported that revenues from car sales in 1997 were down 11 percent from 1996 and revenues from truck sales in 1997 were up 7 percent from 1996. If ... |
84% |
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PS-38246k |
[img]1319.jpg[/img][br/]Yesterday each of the 35 members of a certain task force spent some time working on project P. The graph shows the number of hours and the number of members who spent that n... |
71% |
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PS-ce23ak |
A certain list consists of 21 different numbers. If n is in the list and n is 4 times the average (arithmetic mean) of the other 20 numbers in the list, then n is what fraction of the sum of the 21... |
84% |
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PS-f41yzk |
Three printing presses, R, S, and T, working together at their respective constant rates, can do a certain printing job in 4 hours. S and T, working together at their respective constant rates, can... |
94% |
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PS-62248k |
When tossed, a certain coin has equal probability of landing on either side. If the coin is tossed 3 times, what is the probability that it will land on the same side each time? |
62% |
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DS-0d2u9k |
In the decimal representation of x, where 0＜x ＜1, is the tenths digit of x nonzero?[br/](1) 16x is an integer.[br/](2) 8x is an integer.
|
56% |
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PS-07249k |
In a certain English class, [math]1/4[/math] of the number of girls is equal to [math]1/6[/math] of the total number of students. What is the ratio of the number of boys to the number of girls in t... |
87% |
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PS-f324ak |
In the xy-plane, the vertices of a triangle have coordinates (0, 0), (3, 3), and (7, 0). What is the perimeter of the triangle? |
95% |
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DS-871y6k |
If |n+5|= 5, what is the value of n?[br/](1)n^2 is not equal to 0.[br/](2)n^2 + 10n = 0 |
85% |
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PS-4b23fk |
A store’s selling price of $2,240 for a certain computer would yield a profit of 40 percent of the store’s cost for the computer. What selling price would yield a profit of 50 percent of the comput... |
86% |
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PS-3224ck |
If the volume of a small container is 14,520 cubic millimeters, what is the volume of the container in cubic centimeters? (1 millimeter = 0.1 centimeter) |
89% |
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PS-ac238k |
Which of the following is equal to [math](2^12-2^6)/(2^6-2^3)[/math]? |
86% |
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PS-211yxk |
If the sequence [math]x_1[/math], [math]x_2[/math], [math]x_3[/math], …, [math]x_n[/math], … is such that [math]x_1 = 3[/math] and [math]x_(n+1) = 2x_n - 1[/math] for n ≥ 1, then [math]x_20 - x_19[... |
79% |
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PS-0920ak |
If an integer n is to be chosen at random from the integers 1 to 96, inclusive, what is the probability that n(n + 1)(n + 2) will be divisible by 8? |
42% |
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DS-a41y7k |
If xyz ≠ 0, is x(y+z) ≥ 0 ?[br/](1)|y+z| = |y|+|z|[br/](2)|x+y| = |x|+|y| |
84% |
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PS-5d22zk |
Each signal that a certain ship can make is comprised of 3 different flags hanging vertically in a particular order. How many unique signals can be made by using 4 different flags? |
85% |
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DS-e62uak |
If xy ≠ 0, what is the value of [math](25x^2)/(y^2)[/math]?[br/](1) x = 3[br/](2) 5x – 2y = 0
|
85% |
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DS-991y9k |
Stations X and Y are connected by two separate, straight, parallel rail lines that are 250 miles long. Train P and train Q simultaneously left Station X and Station Y, respectively, and each train ... |
38% |
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DS-a61ubk |
What is the median number of employees assigned per project for the projects at Company Z?[br/](1)25 percent of the projects at Company Z have 4 or more employees assigned to each project.[br/](2)3... |
74% |
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PS-cf24dk |
Of the following, which is greatest? |
94% |
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GWD模考测试题13
