| 题号 |
题目内容 |
平均正确率 |
操作 |
PS-f62osk |
If M is the least common multiple of 90, 196, and 300, which of the following is NOT a factor of M? |
59% |
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DS-b62xok |
In planning for a trip, Joan estimated both the distance of the trip, in miles, and her average speed, in miles per hour. She accurately divided her estimated distance by her estimated average spee... |
62% |
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PS-0b23ik |
What is the greatest prime factor of [math]2^100 - 2^96[/math] ? |
88% |
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DS-242xpk |
What is the value of x?[br/](1) │x+2│≤ 4[br/](2) [math]x^2[/math] = 36
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92% |
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DS-e42qzk |
If b, c, and d are constants and [math]x^2 + bx + c = (x + d)^2[/math] for all values of x, what is the value of c?[br/](1) d = 3[br/](2) b = 6
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58% |
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PS-7321ak |
[img]0608.jpg[/img][br/]The figure above represents a square garden that is divided into 9 rectangular regions with indicated dimensions in meters. The shaded regions are planted with peas, and the... |
81% |
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PS-0e2xqk |
Working at their respective constant rates, machine A makes 100 copies in 12 minutes and machine B makes 150 copies in 10 minutes. If these machines work simultaneously at their respective rates fo... |
97% |
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PS-7224lk |
If w, x, y, and z are integers such that 1 ＜ w ＜ x ＜ y ＜ z and wxyz = 462, then z =? |
93% |
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DS-342xrk |
For a week Raymond is paid at the rate of x dollars per hour for the first 40 hours he works and y dollars per hour for the hours worked in excess of 40 hours. What is the value of y?[br/](1) If Ra... |
86% |
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PS-d52u3k |
A certain company sold 800 units of its product for $8 each and 1,000 units of its product for $5 each. If the company's cost of producing each unit of its product was $6, what was the company's pr... |
94% |
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DS-d12u4k |
What is the remainder when the positive integer n is divided by the positive integer k, where k＞1?[br/](1) [math]n = (k+1)^3[/math][br/](2) k = 5
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57% |
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PS-1b2u5k |
In a stack of cards, 9 cards are blue and the rest are red. If 2 cards are to be chosen at random from the stack without replacement, the probability that the cards chosen will both be blue is [mat... |
84% |
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DS-e32u6k |
In triangle PQR, the measure of angle P is 30° more than twice the measure of angle Q. What is the measure of angle R?[br/](1) PQ = QR[br/](2) The measure of angle P is 78°.
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88% |
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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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DS-342xsk |
The average (arithmetic mean) of a list of numbers is what percent of the sum of the numbers?[br/](1) There are 8 numbers in the list.[br/](2) The sum of the numbers in the list is 100.
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52% |
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PS-4d2xtk |
Three pieces of wire have an average (arithmetic mean) length of 39 inches and a median length of 48 inches. What is the maximum possible length, in inches, of the shortest piece of wire? |
88% |
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PS-1f2xuk |
If 0 ＜ r ＜ 1 ＜ s ＜ 2, which of the following must be less than 1?[br/]I. r/s[br/]II. rs[br/]III. s - r |
78% |
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DS-2a2s1k |
[img]20120326021046767_3601.jpg[/img][br/]Is quadrilateral ABCD a square?[br/](1) AB = BC = CD = DA[br/](2) x + y = 180 |
73% |
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PS-3922tk |
Running at their respective constant rates, machine X takes 2 days longer to produce w widgets than machine Y. At these rates, if the two machines together produce [math]5/4[/math] w widgets in 3 d... |
55% |
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PS-e22u7k |
If k is an integer and [math](0.0025)(0.025)(0.00025)×10^k[/math] is an integer, what is the least possible value of k? |
87% |
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DS-3d2xvk |
If x and y are positive integers, what is the value of [math](x+y)^2[/math]?[br/](1) x = y - 3[br/](2) x and y are prime numbers.
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79% |
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PS-791yok |
The points R, T, and U lie on a circle that has radius 4. If the length of arc RTU is [math]4/3[/math]π, what is the length of line segment RU? |
82% |
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DS-0d2xwk |
If r and t are positive integers, what is the value of t?[br/](1) [math]t^(r-1) = 1[/math][br/](2) r ≠ 1
|
74% |
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DS-8c2xxk |
In the xy-plane, the line k passes through the origin and through the point (a, b), where ab ≠ 0. Is b positive?[br/](1) The slope of line k is negative.[br/](2) a ＞ b |
36% |
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PS-242u0k |
2x + y = 12[br/]| y | ≤ 12[br/]For how many ordered pairs (x , y) that are solutions of the system above are x and y both integers? |
75% |
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PS-4121lk |
Of the families in City X in 1994, 40 percent owned a personal computer. The number of families in City X owning a computer in 1998 was 30 percent greater than it was in 1994, and the total number ... |
81% |
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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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PS-2e2ymk |
The annual interest rate earned by an investment increased by 10 percent from last year to this year. If the annual interest rate earned by the investment this year was 1 percent, what was the annu... |
89% |
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DS-6f1wgk |
In the xy-plane,region R consists of all the points (x, y) such that 2x + 3y = 6. Is the point (r, s)in region R ?[br/](1)3r +2s =6[br/](2)r = 3 and s = 2 |
42% |
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DS-781whk |
If sequence S has250 terms, what is the 243rd term of S ?[br/](1)The 242nd term of S is-494.[br/](2)The first term of S is-12, and each term of S after the first term is 2 less than the preceding t... |
93% |
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PS-13224k |
A total of n trucks and cars are parked in a lot. If the number of cars is [math]1/4[/math] the number of rucks,and [math]2/3[/math] of the trucks are pickups, how many pickups, in terms of n, are ... |
84% |
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DS-5d1wik |
[img]08m30.jpg[/img][br/]The table above shows the number of students in a certain high school class who are boys and the number of students in the class who are studying biology. What is the total... |
36% |
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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-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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PS-2c2nqk |
There are 8 magazines lying on a table; 4 are fashion magazines and the other 4 are sports magazines. If 3 magazines are to be selected at random from the 8 magazines, what is the probability that ... |
81% |
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DS-031xhk |
What is the remainder when the two-digit, positive integer x is divided by 3 ?[br/](1)The sum of the digits of x is 5.[br/](2)The remainder when x is divided by 9 is 5. |
58% |
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PS-8622ok |
In Town X, 64 percent of the population are employed, and 48 percent of the population are employed males. What percent of the employed people in Town X are females? |
55% |
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GWD模考测试题22
