| 题号 |
题目内容 |
平均正确率 |
操作 |
PS-902qvk |
A certain company’s profit in 1996 was 15 percent greater than its profit in 1995, and its profit in 1997 was 20 percent greater than its profit in 1996. The company’s profit in 1997 was what perce... |
92% |
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PS-9e2ojk |
The function f is defined for each positive three-digit integer n by [math]f(n)=2^x3^y5^z[/math], where x, y and z are the hundreds, tens, and units digits of n, respectively. If m and v are three-... |
76% |
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PS-b12xyk |
Alex deposited x dollars into a new account that earned 8 percent annual interest, compounded annually. One year later Alex deposited an additional x dollars into the account. If there were no othe... |
84% |
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DS-ac2xzk |
All 48 seniors in a certain high school take one of two English classes. What is the average (arithmetic mean) height of the seniors in this school?[br/]
(1) In the school, the average height of t... |
82% |
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PS-382y0k |
[img]20120408172528457_3816.jpg[/img][br/]The parallelogram shown has four sides of equal length. What is the ratio of the length of the shorter diagonal to the length of the longer diagonal? |
82% |
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PS-682rtk |
The operation Θ is defined by [math]xΘy=1/x+1/y[/math] for all nonzero numbers x and y. If z is a number greater than 1, which of the following must be true?[br/]I. zΘ(-z) = 0[br/]II.[math]zΘz/(z-1... |
81% |
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DS-e02s5k |
If the average (arithmetic mean) of 5 different numbers is 12, what is the median of the 5 numbers?[br/](1) The median of the 5 numbers is equal to [math]1/3[/math] of the sum of the 4 numbers othe... |
81% |
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PS-cb2x5k |
The charge for a single room at Hotel P is 25 percent less than the charge for a single room at Hotel R and 10 percent less than the charge for a single room at Hotel G. The charge for a single roo... |
78% |
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PS-c72y1k |
If S is the sum of all the integers from 1 to 30, inclusive, what is the greatest prime factor of S ? |
83% |
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DS-1d2p2k |
Is x＜y ?[br/](1) The ratio of x to y is [math]7/9[/math].[br/](2) xy＞0 |
72% |
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DS-be2ajk |
Last year, if Arturo spent a total of $12,000 on his mortgage payments, real estate taxes, and home insurance, how much did he spend on his real estate taxes?[br/](1)Last year, the total amount tha... |
70% |
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DS-ba1x6k |
The total cost of an office dinner was shared equally by k of the n employees who attended the dinner. What was the total cost of the dinner?[br/](1)Each of the k employees who shared the cost of t... |
88% |
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DS-652y2k |
Is m between 35 and 75 ?[br/](1) m is between 40 and 80.[br/](2) m is between 50 and 90.
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95% |
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PS-6b2y3k |
The average (arithmetic mean) cost per book for the 12 books on a certain table is k dollars. If a book that costs 18 dollars is removed from the table and replaced by a book that costs 42 dollars,... |
80% |
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PS-da2xak |
The sequence [math]a_1[/math], [math]a_2[/math], …, [math]a_n[/math], … is such that [math]a_n = 4a_(n – 1) – 3[/math] for all integers n ＞ 1. If [math]a_3 = x[/math], then [math]a_1[/math] = |
94% |
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DS-4f2y4k |
If k is a positive integer, what is the remainder when [math]2^k[/math] is divided by 10 ?[br/](1) k is divisible by 10.[br/](2) k is divisible by 4.
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64% |
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PS-d42y5k |
To be eligible for retirement benefits at the Omega Corporation, the sum of an employee’s age, in years, and the number of years of employment must be at least 70. If x, where x ＜ 70, is a certain... |
49% |
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PS-192y6k |
[math]10,000^(100)[/math] is equivalent to which of the following?[br/]I. [math](100^2)(100^(100))[/math][br/]II. [math]100^(200)[/math][br/]III. [math]10^400[/math]
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75% |
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DS-962xek |
For each positive integer n, the integer n* is defined by n* = [math]n^2[/math] + 1. What is the value of the positive integer k ?[br/](1) When k is divided by 4, the remainder is 1.[br/](2) 18 ≤ k... |
71% |
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PS-7a2y7k |
Chris mixed 3 pounds of raisins with 4 pounds of nuts. If a pound of nuts costs 3 times as much as a pound of raisins, then the total cost of the raisins was what fraction of the total cost of the ... |
91% |
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PS-9b2y8k |
In the xy-plane, the points (c, d), (c, -d), and (-c, -d) are three vertices of a certain square. If c ＜ 0 and d ＞ 0, which of the following points is in the same quadrant as the fourth vertex of... |
86% |
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DS-572y9k |
At the beginning of the year, the Finance Committee and the Planning Committee of a certain company each had n members, and no one was a member of both committees. At the end of the year, 5 members... |
63% |
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PS-922o9k |
Which of the following is equal to [math][1/(sqrt3-sqrt2)]^2[/math]? |
94% |
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PS-9c226k |
One gram of a certain health food contains 7 percent of the minimum daily requirement of vitamin E and 3 percent of the minimum daily requirement of vitamin A. If vitamins E and A are to be obtaine... |
80% |
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DS-e22yak |
Of the high school students who participated in a recent survey, 110 had taken a course in biology and 230 had taken a course in history. How many students participated in the survey?[br/](1) Of th... |
92% |
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PS-d92ybk |
According to a certain estimate, the depth N(t), in centimeters, of the water in a certain tank at t hours past 2:00 in the morning is given by [math]N(t) = -20(t – 5)^2 + 500[/math] for 0 ≤ t ≤ 10... |
74% |
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DS-652amk |
If line k in the xy-plane has equation y = mx + b, where m and b are constants, what is the slope of k ?[br/](1)k is parallel to the line with equation y = (1 - m)x + b + 1.[br/](2)k intersects the... |
71% |
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PS-292jvk |
If r = 0.345, s = [math](0.345)^2[/math], and t =[math]sqrt0.345[/math], which of the following is the correct ordering of r, s, and t ? |
86% |
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PS-4522gk |
A certain roller coaster has 3 cars, and a passenger is equally likely to ride in any 1 of the 3 cars each time that passenger rides the roller coaster. If a certain passenger is to ride the roller... |
66% |
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PS-522nok |
There are 8 books on a shelf, of which 2 are paperbacks and 6 are hardbacks. How many possible selections of 4 books from this self include at least one paperback? |
73% |
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PS-d722lk |
In a corporation, 50 percent of the male employees and 40 percent of the female employees are at least 35 years old. If 42 percent of all the employees are at least 35 years old, what fraction of t... |
82% |
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DS-651tsk |
Tom, Jane, and Sue each purchased a new house. The average (arithmetic mean) price of the three houses was $120,000. What was the median price of the three houses?[br/](1)The price of Tom's house w... |
71% |
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PS-7022mk |
If [math]10^50-74[/math] is written as an integer in base 10 notation, what is the sum of the digits in that integer? |
70% |
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PS-b92npk |
[img]20120325211423410_3445.png[/img][br/]In the figure, each side of square ABCD has length 1, the length of line segment CE is 1, and the length of line segment BE is equal to the length of line ... |
57% |
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DS-351xck |
What is the greatest common factor of the positive integers j and k?[br/](1)k = j + 1[br/](2)jk is divisible by 5. |
67% |
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PS-a82kik |
If x, y, and k are positive numbers such that [math](x/(x+y))(10)+(y/(x+y))(20)[/math]=k and if x＜y which of the following could be the value of k? |
68% |
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PS-db24rk |
Of the goose eggs laid at a certain pond, [math]2/3[/math] hatched, and [math]3/4[/math] of the geese that hatched from those eggs survived the first month. Of the geese that survived the first mon... |
84% |
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GWD模考测试题23
