| 题号 |
题目内容 |
平均正确率 |
操作 |
PS-a22enk |
If x and y are different prime numbers, each greater than 2, which of the following must betrue?[br/]I [math]x+y!=91[/math][br/]II x - y is an even integer.[br/]III [math]x/y[/math]is not an integer. |
68% |
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PS-492hkk |
Which of the following is the lowest positive integer that is divisible by 2, 3, 4, 5, 6, 7, 8,and9? |
72% |
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|
DS-602ork |
In June 1989, what was the ratio of the number of sales transactions made by Salesperson X to the number of sales transactions made by Salesperson Y?[br/](1) In June 1989, Salesperson X made 50 per... |
65% |
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DS-5a2rzk |
The ratio of the number of women to the number of men to the number of children in a room is 5:2:7, respectively. What is the total number of people in the room?[br/](1) The total number of women a... |
63% |
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PS-642huk |
Car A is 20 miles behind Car B, which is traveling in the same direction along the same route as Car A. Car A is traveling at a constant speed of 58 miles per hour and Car B is traveling at a const... |
81% |
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PS-d430bk |
If x = kc and y = kt, then y - x = |
96% |
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DS-0a1tnk |
For all integers n, the function f is defined by [math]f (n) = a^n[/math], where a is a constant. What is the value of f (1)?[br/](1)f (2) = 100[br/](2)f (3) = -1,000 |
73% |
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PS-ea2omk |
Working alone at its constant rate, machine K took 3 hours to produce [math]1/4[/math] of the units produced last Friday. Then machine M started working and the two machines, working simultaneously... |
85% |
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PS-043isk |
If [math](2y - 5)^2 = 361[/math], which of the following could be the value of y + 2? |
69% |
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DS-3d341k |
If r and s are the roots of the equation [math]x^2 + bx + c = 0[/math], where b and c are constants, is rs ＜ 0 ?[br/](1) b ＜ 0[br/](2) c ＜ 0
|
67% |
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PS-1036ik |
The average (arithmetic mean) of the integers from 200 to 400, inclusive, is how much greater than the average of the integers from 50 to 100, inclusive? |
91% |
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|
DS-ab2yjk |
During a 10-week summer vacation, was the average (arithmetic mean) number of books that Carolyn read per week greater than the average number of books that Jacob read per week?[br/](1) Twice the a... |
50% |
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PS-f42rbk |
If [math]2^x + 2^x + 2^x + 2^x = 2^n[/math], what is x in terms of n? |
84% |
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DS-a92uwk |
Is |k| = 2 ?[br/](1) [math] k^2 = 4[/math][br/](2) k = |-2|
|
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-b825tk |
[img]DS1138.jpg[/img][br/]Will the first 10 volumes of a 20-volume encyclopaedia fit upright in the book rack shown above?[br/](1)x = 50 centimeters[br/](2)Twelve of the volumes have an average (ar... |
68% |
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PS-7a1z4k |
Of the 500 business people surveyed, 78 percent said that they use their laptop computers at home, 65 percent said that they use them in hotels, and 52 percent said that they use them both at home ... |
92% |
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|
PS-c622xk |
A positive integer n is said to be "prime-saturated" if the product of all the different
positive prime factors of n is less than the square root of n. What is the greatest two-digit
prime-satura... |
60% |
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|
PS-5e2zlk |
[img]20120410175921985_3873.jpg[/img][br/]A vending machine is designed to dispense 8 ounces of coffee into a cup. After a test that recorded the number of ounces of coffee in each of 1,000 cups di... |
53% |
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DS-6633ek |
[img]20120425202215253_4010.jpg[/img][br/]In the xy-plane above, is angle QPR a right angle?[br/](1) Points P and Q have the same x-coordinate.[br/](2) Points P and R have the same y-coordinate.
|
95% |
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DS-4825yk |
Is x equal to 5?[br/](1)x ≥ 5[br/](2)x ≤ 5 |
94% |
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PS-253ipk |
Which of the following is NOT equivalent to [math]49a^2 = 9b^2 - 4[/math]? |
94% |
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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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|
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-192fhk |
At a loading dock, each worker on the night crew loaded [math]3/4[/math] as many boxes as each worker on the day crew. If the night crew has [math]4/5[/math] as many workers as the day crew, what f... |
67% |
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|
DS-571uxk |
What was the cost of a certain telephone call?[br/](1)The call lasted 8 minutes.[br/](2)The cost of the first minute of the call was $0.32, which was twice the cost of each minute of the call after... |
97% |
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|
DS-91287k |
[img]DS11124.jpg[/img][br/]In the rectangular coordinate system above, if OP ＜ PQ, is the area of region OPQ greater than 48 ?[br/](1)The coordinates of point P are (6,8).[br/](2)The coordinates o... |
69% |
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|
PS-fc2gqk |
If [math]1/2[/math] of the air in a tank is removed with each stroke of a vacuum pump, what fraction of the original amount of air has been removed after 4 strokes? |
63% |
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PS-262kqk |
If 5-[math]6/x[/math]=x then x has how many possible values? |
91% |
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PS-f33iok |
[math](5^8 + 1)(5^4 + 1)(5^2 + 1)(5^2-1)=[/math] |
94% |
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PS-892h7k |
A store currently charges the same price for each towel that it sells. If the current price of each towel were to be increased by $1, 10 fewer of the towels could be bought for $120, excluding sale... |
53% |
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DS-4729fk |
Carmen currently works 30 hours per week at her part-time job. If her gross hourly wage were to increase by $1.50, how many fewer hours could she work per week and still earn the same gross weekly ... |
86% |
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DS-e3281k |
If n s a positive integer, is [math]150/n[/math] an integer?[br/](1)n ＜ 7[br/](2)n is a prime number |
84% |
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PS-872r4k |
[img]20120326003554082_3568.jpg[/img][br/]A rectangular picture is surrounded by a boarder, as shown in the figure above. Without the boarder the length of the picture is twice its width. If the ar... |
77% |
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PS-c93iqk |
If [math]q = 43 + (p - 7)^2[/math], then q is lowest when p = ？ |
94% |
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DS-7329ok |
If [math]p_1[/math] and [math]p_2[/math] are the populations and [math]r_1[/math] and [math]r_2[/math] are the numbers of representatives of District 1 and District 2, respectively, the ratio of th... |
75% |
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PS-d823kk |
If the average (arithmetic mean) of positive integers x, y, and z is 10, what is the greatest possible value of z ? |
92% |
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TN模考试题07
