| 题号 |
题目内容 |
平均正确率 |
操作 |
PS-b62pck |
When 20 is divided by the positive integer k, the remainder is k – 2. Which of the following is a possible value of k ? |
93% |
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DS-302pek |
[img]20120325232128051_3506.jpg[/img][br/]In the figure above, is quadrilateral PQRS a parallelogram?[br/](1) The area of ∆PQS is equal to the area of ∆QRS.[br/](2) QR = RS |
61% |
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DS-dc2pjk |
If n is an integer and [math]x^n–x^(-n)=0[/math], what is the value of x ?[br/](1) x is an integer.[br/](2) n ≠ 0
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56% |
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PS-df2pmk |
If xy=165, where x and y are positive integers and x＞y, what is the least possible value of x – y ? |
86% |
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PS-312pok |
According to a survey, 93 percent of teenagers have used a computer to play games, 89 percent have used a computer to write reports, and 5 percent have not used a computer for either of these purpo... |
93% |
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PS-632pqk |
The value of [math]–3+sqrt(9-k)[/math] is positive for which of the following values of k ?[br/]I. -1[br/]II. 0[br/]III. 1 |
93% |
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DS-3a2psk |
There were 2 apples and 5 bananas in a basket. After additional apples and bananas were placed in the basket, the ratio of the number of apples to the number of bananas was [math]1/2[/math]. How ma... |
88% |
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DS-e42ptk |
S is a set of points in the plane. How many distinct triangles can be drawn that have three of the points in S as vertices?[br/](1) The number of distinct points in S is 5.[br/](2) No three of the ... |
78% |
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DS-f42pvk |
A total of 100 customers purchased books at a certain bookstore last week. If these customers purchased a total of 200 books, how many of the customers purchased only 1 book each?[br/](1) None of t... |
55% |
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PS-342pxk |
[img]20120325234018989_3525.jpg[/img][br/]In the figure, AB = AE = 8, BC = CD = 13, and DE = 2. What is the area of region ABCDE ? |
84% |
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PS-0d21ck |
A certain business produced x rakes each month form November through February and shipped [math]x/2[/math] rakes at the beginning of each month from March through October. The business paid no stor... |
69% |
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PS-d82pzk |
If the integer k is a multiple of 3, which of the following is also a multiple of 3 ? |
97% |
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DS-e02q2k |
For any positive integer x, the 2-height of x is defined to be the greatest nonnegative integer n such that [math]2^n[/math] is a factor of x. If k and m are positive integers, is the 2-height of k... |
58% |
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PS-4a2q5k |
If [math]4x＜x＜x^3＜x^2[/math], which of the following is a possible value of x ? |
91% |
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DS-2e2q8k |
What was the range of the selling prices of the 30 wallets sold by a certain store yesterday?[br/](1) [math]1/3[/math] of the wallets had a selling price of $24 each.[br/](2) The lowest selling pri... |
93% |
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DS-9d2qbk |
On a certain nonstop trip, Marta averaged x miles per hour for 2 hours and y miles per hour for the remaining 3 hours. What was her average speed, in miles per hour, for the entire trip?[br/](1) 2x... |
81% |
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PS-892qck |
In a box of 12 pens, a total of 3 are defective. If a customer buys 2 pens selected at random from the box, what is the probability that neither pen will be defective? |
90% |
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DS-0e2bbk |
A scientist recorded the number of eggs in each of 10 birds' nests. What was the standard deviation of the numbers of eggs in the 10 nests?[br/](1)The average (arithmetic mean) number of eggs for t... |
78% |
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DS-f52qdk |
If p, r, s, and t are nonzero integers, is [math]p/r=s/t[/math]?[br/](1) s = 3p and t = 3r.[br/](2) 3p = 2r and 3s = 2t. |
90% |
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PS-c32qek |
If [math]a_1=1[/math] and [math]a_(n+1)=1+1/(a_n)[/math] for all n ≥ 1, what is the value of [math]a_5[/math] ? |
96% |
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PS-e82qfk |
A toy store's gross profit on a computer game was 10 percent of the cost of the game. If the store increased the selling price of the game from $44 to $46 and the cost of the game remained the same... |
83% |
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PS-282qgk |
Four extra-large sandwiches of exactly the same size were ordered for m students, where m＞4. Three of the sandwiches were evenly divided among the students. Since 4 students did not want any of th... |
63% |
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DS-342qhk |
When the wind speed is 9 miles per hour, the wind-chill factor w is given by w = -17.366 + 1.19t, where t is the temperature in degrees Fahrenheit. If at noon yesterday the wind speed was 9 miles p... |
86% |
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PS-a22qik |
Which of the following is closest in value to [math]9^9–9^2[/math] ? |
88% |
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DS-d62qjk |
An office supply store received a shipment of boxes of pencils. How many pencils were in the shipment altogether? (1 gross = 12 dozen)[br/](1) The number of boxes of pencils in the shipment was 6 g... |
78% |
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PS-c02qkk |
Of the following values of n, the value of [math](-1/5)^(-n)[/math] will be greatest for n = |
70% |
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DS-ba2qlk |
For all numbers x, the function f is defined by f(x) = 3x + 1 and the function g is defined by g(x) = [math](x-1)/3[/math] . If c is a positive number, what is the value of g(c)?[br/](1) f(c) = 13[... |
94% |
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PS-022qmk |
A certain company expects quarterly earnings of $0.80 per share of stock, half of which will be distributed as dividends to shareholders while the rest will be used for research and development. If... |
79% |
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SC-7fanoh |
2001 proved to be the automaker's first losing year since 1992, [u]when the company had lost $7.4 billion, which was primarily because of[/u] almost $7 billion in accounting charges. |
63% |
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DS-112qok |
What is the value of [math](2x–5)^3[/math] ?[br/](1) [math](2x)^3=216[/math][br/](2) [math](2x+3)^2=81[/math]
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81% |
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PS-262qpk |
Phobus, one of the satellites of Mars, revolves about Mars at a distance of approximately 5,800 miles from the center of Mars and approximately 3,700 miles from the surface of Mars. If it is assume... |
87% |
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DS-bb1y5k |
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. |
51% |
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PS-712qqk |
A small business invests $9,900 in equipment to produce a product. Each unit of the product costs $0.65 to produce and is sold for $1.20. How many units of the product must be sold before the reven... |
94% |
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DS-372qrk |
A merchant discounted the sale price of a coat and the sale price of a sweater. Which of the two articles of clothing was discounted by the greater dollar amount?[br/](1) The percent discount on th... |
76% |
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PS-be2qsk |
If g(x) = x + 4 for all x and [math]f(x)=(2x^2-5)/x[/math] for all nonzero x, then f(x) = g(x) for which of the following values of x ? |
95% |
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DS-9a2qtk |
Is x＞5 ?[br/](1) [math]x^2＞25[/math][br/](2) 2x+7＞0
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84% |
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PS-012quk |
Pumping alone at their respective constant rates, one inlet pipe fills an empty tank to [math]1/2[/math] of capacity in 3 hours and a second inlet pipe fills the same empty tank to [math]2/3[/math]... |
93% |
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GWD模考测试题29
