| 题号 |
题目内容 |
平均正确率 |
操作 |
PS-8b2iek |
A straight pipe 1 yard in length was marked off in fourths and also in thirds. If the pipe was then cut into separate pieces at each of these markings, which of the following gives all the differen... |
76% |
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PS-ef3jak |
Which of the following inequalities has a solution set that, when graphed on a number line, is a single, finite line segment? |
88% |
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DS-c5254k |
A certain expressway has Exits J, K, L, and M, in that order. What is the road distance from Exit K to Exit L ?[br/](1)The road distance from Exit J to Exit L is 21 kilometers.[br/](2)The road dist... |
90% |
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DS-2d2bjk |
The hypotenuse of a right triangle is 10 cm. What is the perimeter, in centimeters, of the triangle?[br/](1)The area of the triangle is 25 square centimeters.[br/](2)The 2 legs of the triangle are ... |
69% |
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PS-8731vk |
For which of the following functions is f(a + b)=f(a) + f(b) for all positive numbers a and b ? |
79% |
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PS-903qsk |
[math](5^8 + 1)(5^4 + 1)(5^2 + 1)(5^2-1)=[/math] |
94% |
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DS-b12aak |
In the xy-plane, the line with equation ax + by + c = 0, where [math]abc != 0[/math], has slope [math]2/3[/math]. What is the value of b ?[br/](1)a = 4[br/](2)c = -6 |
92% |
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DS-ab37kk |
If $5,000 invested for one year at p percent simple annual interest yields $500, what amount must be invested at k percent simple annual interest for one year to yield the same number of dollars?[b... |
85% |
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DS-cf259k |
Is 1 ＜ x ＜ 2?[br/](1)0＜ x[br/](2)x＜ 3 |
89% |
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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-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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DS-1f25ak |
Water is pumped into a partially filled tank at a constant rate through an inlet pipe. At the same time, water is pumped out of the tank at a constant rate through an outlet pipe. At what rate, in ... |
82% |
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PS-4223hk |
If each of the 12 teams participating in a certain tournament plays exactly one game with each of the other teams, how many games will be played? |
84% |
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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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PS-ef2wsk |
On January 1, 1994, Jill invested P dollars in an account that pays interest at a rate of 8 percent per year, compounded annually on December 31. If there were no other deposits or withdrawals in t... |
94% |
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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-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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DS-ed1u3k |
On a certain date, Hannah invested $5,000 at x percent simple annual interest and a different amount at y percent simple annual interest. What amount did Hannah invest at y percent simple annual in... |
82% |
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PS-7f34ok |
For the positive integers a, b, and k, [math]a^k[/math] || b means that [math]a^k[/math] is a divisor of b, but [math]a^(k+1)[/math] is not a divisor of b. If k is a positive integer and [math]2^k[... |
83% |
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DS-261xvk |
The total charge to rent a car for one day from Company J consists of a fixed charge of $15.00 plus a charge of $0.20 per mile driven. The total charge to rent a car for one day from Company K cons... |
83% |
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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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DS-9a28tk |
Is n an integer?[br/](1)[math]n^2[/math] is an integer.[br/](2)[math]sqrtn[/math] is an integer. |
71% |
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PS-382urk |
Departments A, B, and C have 10 employees each, and department D has 20 employees. Departments A, B, C, and D have no employees in common. A task force is to be formed by selecting 1 employee from ... |
90% |
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PS-252f9k |
[img]PS11130.jpg[/img][br/]Which of the following inequalities is an algebraic expression for the shaded part of the number line above? |
87% |
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PS-2c2zck |
If a is a positive integer, and if the units digit of [math]a^2[/math] is 9 and the units digit of [math](a +1)^2[/math] is 4, what is the units digit of [math](a + 2)^2[/math] ? |
84% |
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DS-b525bk |
Is x a negative number?[br/](1)9x ＞ lOx[br/](2)x + 3 is positive. |
94% |
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DS-fc3a0k |
[img]20120524134854238_4248.jpg[/img][br/]In the triangle above, what is the value of b?[br/](1)[math]c=2sqrt2[/math][br/](2)x = 45 |
93% |
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PS-8e2jsk |
At a certain instant in time, the number of cars, N, traveling on a portion of a certain highway can be estimated by the formula[br/]N=[math]20Ld/(600+s^2)[/math][br/]where L is the number of lanes... |
87% |
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PS-552g7k |
Lois has x dollars more than Jim has, and together they have a total of y dollars. Which of the following represents the number of dollars that Jim has? |
95% |
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DS-8d2pik |
If n is a positive integer and r is the remainder when (n – 1)(n + 1) is divided by 24, what is the value of r?[br/](1) 2 is not a factor of n.[br/](2) 3 is not a factor of n.
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65% |
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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-cb243k |
For a certain race, 3 teams were allowed to enter 3 members each. A team earned 6 - n points whenever one of its members finished in nth place, where 1 ≤ n ≤ 5. There were no ties, disqualification... |
58% |
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PS-3a3c4k |
For which real numbers x is the expression [math]1/((x-2)(x+1))[/math] [u]not[/u] defined? |
92% |
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DS-ac2xzk |
All 48 seniors in a certain high school take one of two English classes. What is the average (arithmetic mean) height of the seniors in this school?[br/]
(1) In the school, the average height of t... |
82% |
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DS-cb2ttk |
For all integers x and y, the operation △ is defined by [math]x△y = (x+2)^2+(y+3)^2[/math]. What is the value of integer t?[br/](1) t △ 2 = 74[br/](2) 2 △ t = 80
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72% |
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DS-292bnk |
What is the value of [math](2t+t-x)/(t-x)[/math][br/](1)[math]2t/(t-x)[/math]=3[br/](2)t-x=5 |
87% |
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PS-932hsk |
1+[math]1/(1+(1/(1+1/3)))[/math] |
73% |
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TN模考试题12
