| 题号 |
题目内容 |
平均正确率 |
操作 |
PS-212v5k |
If the average (arithmetic mean) of 3, 8, and w is greater than or equal to 7 and less than or equal to 44, what is the greatest possible value of w ? |
96% |
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PS-70227k |
A researcher plans to identify each participant in a certain medical experiment with a code consisting of either a single letter or a pair of distinct letters written in alphabetical order. What is... |
58% |
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DS-8b2twk |
If x and y are nonzero integers, is 18 a factor of [math]xy^2[/math]?[br/](1) x is a multiple of 54.[br/](2) y is a multiple of 6. |
73% |
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PS-5e2v6k |
John makes wooden bowls and sells each bowl at a price that consists of his cost of making the bowl and a markup amount that is 25 percent of the selling price. What is the selling price of a bowl ... |
78% |
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DS-712v7k |
Can a certain rectangular sheet of glass be positioned on a rectangular tabletop so that it covers the entire tabletop and its edges are parallel to the edges of the tabletop?[br/](1) The tabletop ... |
75% |
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PS-7a20tk |
[math]sqrt[2sqrt63 + 2/(8+3sqrt7)] =[/math] |
91% |
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DS-3b2v8k |
Is t greater than v ?[br/](1) t is greater than 3.[br/](2) v is less than 5.
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97% |
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PS-2523xk |
A certain right triangle has sides of length x, y, and z, where x ＜ y ＜ z. If the area of this triangular region is 1, which of the following indicates all of the possible values of y ? |
67% |
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DS-692v9k |
Is x greater than y ?[br/](1) [math]x – y^2 ＞ 0[/math][br/](2) xy ＜0 |
71% |
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DS-bc2vak |
Was the average (arithmetic mean) weight of the package mailed at a certain post office yesterday greater than 600 grams?[br/](1) The total weight of the packages mailed at the post office yesterda... |
56% |
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PS-e322ek |
Working simultaneously and independently at an identical constant rate, 4 machines of a certain type can produce a total of x units of product P in 6 days. How many of these machines, working simul... |
89% |
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DS-531wkk |
At a sale all books were priced equally and all magazines were priced equally. What was the price of 3 books and 4 magazines at the sale?[br/](1)At the sale the price of a book was $1.45 more than ... |
82% |
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DS-a62vbk |
Juan bought some paperback books that cost $8 each and some hardcover books that cost $25 each. If Juan bought more than 10 paperback books, how many hardcover books did he buy?[br/](1) The total c... |
44% |
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PS-2e2sbk |
[img]20120326023212877_3611.jpg[/img][br/]The graph above shows the combined revenue, in billions of dollars, of a chain of food stores for each year over a four-year period. In 1994 a certain stor... |
72% |
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DS-1b2vck |
In the xy-plane, does the point (a, b) lie above the line y = x ?[br/](1) a = 2[br/](2) b = a + 2 |
69% |
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PS-2f2vdk |
The three-digit integer kss is the sum of the two-digit integers ks and rs, where k, r, and s are the digits of the integers. Which of the following must be true?[br/]I. k = 2[br/]II. r = 9[br/]III... |
83% |
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PS-0b23ik |
What is the greatest prime factor of [math]2^100 - 2^96[/math] ? |
88% |
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PS-3d2vek |
How many seconds will it take for a car that is traveling at a constant rate of 45 miles per hour to travel a distance of 220 yards? (1 mile = 1,760 yards) |
93% |
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DS-9f2vfk |
Of the people who attended a workshop, 60 percent were teachers and some of the teachers were teachers of language arts. What percent of the people who attended the workshop were teachers of langua... |
82% |
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DS-4b2azk |
For any integers x and y, min(x, y) and max(x, y) denote the minimum and the maximum of x and y, respectively. For example, min(5, 2) = 2 and max(5, 2) = 5. For the integer w, what is the value of ... |
56% |
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DS-572vgk |
Harvey teaches a certain number of biology students in 2 classes, K and L. He can divide the students in class K into 7 groups of n students each. He can divide the students in class L into 6 group... |
76% |
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DS-972vhk |
What is the value of [math]t^(-1)[/math] ?[br/](1) [math]t^(-2) ＜ 1[/math][br/](2) [math]t^(-3) =1/27[/math] |
95% |
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PS-2a2s7k |
If [math]9x=27^y[/math], which of the following expresses x in terms of y? |
92% |
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PS-8522dk |
A certain fruit stand sold apples for $0.70 each and bananas for $0.50 each. If a customer purchased both apples and bananas from the stand for a total of $6.30, what total number of apples and ban... |
90% |
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PS-1d2vik |
If the range of the six numbers 4, 3, 14, 7, 10, and x is 12, what is the difference between the greatest possible value of x and least possible value of x ? |
86% |
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DS-e72vjk |
If n is a positive integer, what is the value of n ?[br/](1) When n is divided by 3, the remainder is 2.[br/](2) When [math]n^2[/math] is divided by 3, the remainder is 1. |
81% |
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PS-e31zdk |
If [math]xy != 0[/math] and [math]x^2y^2 - xy = 6[/math], which of the following could be y in terms of x?[br/]I.[math]1/(2x)[/math][br/]II.[math]-2/x[/math][br/]III [math]3/x[/math] |
90% |
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PS-862vkk |
[math]sqrt(4.8*10^9)[/math] is closest in value to |
83% |
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DS-ee1vyk |
Joanna bought only $0.15 stamps and $0.29 stamps. How many $0.15 stamps did she buy?[br/](1)She bought $4.40 worth of stamps.[br/](2)She bought an equal number of $0.15 stamps and $0.29 stamps. |
47% |
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PS-202vlk |
Jim’s income comes from his wages and from tips. For a certain month, if Jim’s income from his wages was 180 percent of his income from tips, approximately what percent of his total income came fro... |
91% |
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PS-442vmk |
[img]20120407212931301_3730.jpg[/img][br/]In the figure shown, line segments QS and RT are diameters of the circle. If the distance between Q and R is [math](8)/(sqrt2)[/math] , what is the area of... |
85% |
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DS-562vnk |
Does the decimal equivalent of [math]p/q[/math], where p and q are positive integers, contain only a finite number of nonzero digits?[br/](1) p ＞ q[br/](2) q = 8 |
72% |
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PS-922vok |
Of the land owned by a farmer, 90 percent was cleared for planting. Of the cleared land, 40 percent was planted with soybeans and 50 percent of the cleared land was planted with wheat. If the remai... |
90% |
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DS-592vpk |
At an auction, each of the bids on a certain clock after the first bid was $100 greater than the immediately preceding bid. What was the amount of the last bid on the clock?[br/](1) The first bid o... |
84% |
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PS-f22vqk |
In a recent election, Ms. Robbins received 8,000 votes cast by independent voters, that is, voters not registered with a specific political party. She also received 10 percent of the votes cast by ... |
73% |
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DS-f72tkk |
If |M+4|=2, what is the value of M?[br/](1) M＜0[br/](2) [math]M^2+8M+12=0[/math]
|
81% |
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PS-2923uk |
A box contains exactly 24 balls, of which 12 are red and 12 are blue. If two balls are to be picked from this box at random and without replacement, what is the probability that both balls will be ... |
92% |
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GWD模考测试题17
