| 题号 |
题目内容 |
平均正确率 |
操作 |
PS-a92sqk |
what is 35 percent of the sum of 1.4 and 1/5? |
97% |
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DS-362srk |
If x≠y, is x+y=xy?[br/](1) (1-x)(1-y)=1[br/](2) [math]x^2-y^2=x^2y-xy^2[/math]
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82% |
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DS-a72stk |
What is the value of the product xy?[br/](1) [math]x/y=1/5[/math][br/](2) x+y=60 |
97% |
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PS-ae2o6k |
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) |
90% |
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DS-672rwk |
If [math]x^3y^4=5000[/math], is y = 5?[br/](1) y is a positive integer.[br/](2) x is an integer. |
45% |
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PS-162svk |
A string of 10 lightbulbs is wired in such a way that if any individual lightbulb fails, the entire string fails. If for each individual lightbulb the probability of failing during time period T id... |
61% |
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PS-0122bk |
If n is a positive integer, what is the remainder when (7^(4n+3))(6^n) is divided by 10 ? |
70% |
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DS-9d2axk |
A department manager distributed a number of pens, pencils, and pads among the staff in the department, with each staff member receiving x pens, y pencils, and z pads. How many staff members were i... |
64% |
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PS-1b2sxk |
In the xy-plane, if line k passes through the points (3,-4) and (a,b), where b=4a-16 and a≠3, what is the slope of k?
|
90% |
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PS-b32syk |
The sides of a square region, measured to the nearest centimeter, are 6 centimeters long. The least possible value of the actual area of the square region is |
62% |
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PS-362szk |
Of the three-digit positive integers that have no digits equal to zero, how many have two digits that are equal to each other and the remaining digit different from the other two? |
73% |
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DS-722t0k |
Is [math]y^2=0[/math]?[br/](1) 3y=0[br/](2) [math]y^3=0[/math]
|
97% |
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DS-3a2t1k |
If the average (arithmetic mean) of the assessed values of x houses is $212,000 and the average of the assessed values of y other houses is $194,000, what is the average of the assessed values of t... |
68% |
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PS-a51zrk |
If a certain coin is flipped, the probability that the coin will land heads is [math]1/2[/math]. If the coin is flipped 5 times, what is the probability that it will land heads up on the first 3 fl... |
89% |
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PS-092t2k |
Company A has a total of n employees, where n is an odd integer, and no two employees have the same annual salary. The annual salaries of the n employees are listed in increasing order, and the 16t... |
92% |
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DS-542t3k |
If [math]sqrtx[/math] is an integer, what is the value of [math]sqrtx[/math]?[br/](1) 11＜x＜17[br/](2) [math]2＜sqrtx＜5[/math] |
82% |
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PS-812t4k |
If [math]P(r)=8r/(1-r)[/math], for what value of r does [math]P(r)=1/2(P(3))[/math]? |
77% |
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PS-b72ywk |
Anne traveled from City A to City B in 4 hours, and her speed was between 25 miles per hour and 45 miles per hour. John traveled from City A to City B along the same route in 2 hours, and his speed... |
93% |
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DS-5a2t6k |
Square ABCD is inscribed in circle O. What is the area of square region ABCD?[br/](1) The area of circular region O is 64π.[br/](2) The circumference of circle O is 16π. |
92% |
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PS-ed2t7k |
Based on this year's costs, an orcharde grower budgets P dollars for planting N new trees next year. If the average cost of planting each tree were to increase 25 percent from this year's cost ,the... |
73% |
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PS-a93f5k |
If [math](z-3)^2=12[/math],then 2z(z-6)= |
95% |
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PS-622t9k |
which of the following is a value of X for which [math]X^11-X^3＞0[/math] |
84% |
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DS-722tak |
At a fruit stand yesterday, the price of each apple was $0.10 more than the price of each orange. What was the total revenue from the sale of oranges at the fruit stand yesterday?[br/](1) The numbe... |
82% |
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DS-4d2tbk |
if R. S. and T are numbers on the number line, not necessarity in that order, what is the distance between R and T?[br/](1) The distance between R and S is 50.[br/](2) The distance between S and T ... |
94% |
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PS-f42tck |
A farmer produced 750 bushels of a certain crop at a cost of $20 per bushel. If the farmer sold [math]2/3[/math] of the bushels for double their production cost and sold the remaining bushels at 25... |
81% |
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DS-eb2tdk |
Is [math](X+Y)^3[/math] an even integer?[br/](1) X and Y are integers.[br/](2) XY=9
|
80% |
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DS-282tek |
If M is a positive integer, then [math]M^3[/math] has how many digits?[br/](1) M has 3 digits.[br/](2) [math]M^2[/math] has 5 digits |
52% |
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PS-e32tfk |
If the function f is defined by [math]f(x)=x^2+1/x^2[/math] for all nonzero numbers x, then [math]f(-1/x)=[/math] |
85% |
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DS-4a2tgk |
If x＞1 and y＞1, is x＜y?[br/](1)[math](x^2)/(xy+x)＜1[/math][br/](2) [math](xy)/(y^2)-y＜1[/math]
|
73% |
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PS-ca2thk |
Yesterday it took a certain plane 3 hours to fly from City A to City B at an average speed of 400 miles per hour. Today the same plane flew from City A to City B along the same route at an average ... |
75% |
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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-752tik |
Last year in a group of 30 businesses, 21 reported a net profit and 15 had investments in foreign markets. How many of the businesses did not report a net profit nor invest in foreign markets last ... |
85% |
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PS-362tjk |
A pump started filling an empty pool with water and continued at a constant rate until the pool was full. At noon the pool was [math]1/3[/math] full, and [math]1 1/4[/math] hours later it was [math... |
94% |
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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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DS-df2tlk |
Linda purchased 3 books at a book fair. What was the median price of the 3 books?[br/](1) The average (arithmetic mean) price of the 3 books was $1.5[br/](2) The price of one of the 3 books was $1.5 |
87% |
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PS-2d2tmk |
In a certain quiz that consists of 10 questions, each question after the first is worth 4 points more than the preceding question. If the 10 questions on the
quiz are worth a total of 360 points, h... |
83% |
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|
PS-a02tnk |
[img]20120326035430171_3659.jpg[/img][br/]In the correctly worked addition problem shown, where the sum of the two-digit positive integers AB and BA is the three-digit integer AAC, and A, B, and C ... |
82% |
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GWD模考测试题25
