| 题号 |
题目内容 |
平均正确率 |
操作 |
DS-f62skk |
If xy ≠ 0, what is the value of [math]1/x + 1/y[/math] ?[br/](1) [math]1/(x+y)=-1[/math][br/](2) xy=6(x+y)
|
87% |
查看详情
|
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% |
查看详情
|
PS-f92tuk |
Before a certain tire is used, 40 percent of its total weight consists of tread. If during a lifetime of use, 50 percent, by weight, of the tire’s tread is lost and no other parts of the tire is lo... |
61% |
查看详情
|
|
|
PS-063c5k |
An equal number of desks and bookcases are to be placed along a library wall that is 15 meters long. Each desk is 2 meters long, and each bookshelf is 1.5 meters long. If the maximum possible numbe... |
81% |
查看详情
|
DS-142sak |
If [math]x^2–y=w[/math], what is the value of x?[br/](1) w + y = 4[br/](2) y = 1 |
84% |
查看详情
|
PS-e63rtk |
How many different sets of positive square integers, each greater than 1, add up to 75? |
14% |
查看详情
|
PS-e72xjk |
A coat’s original price of $112 was reduced by 20 percent for a sale. If the sale price was then reduced by 20 percent, which of the following expresses the price of the coat after the second price... |
95% |
查看详情
|
DS-bb1y5k |
In the decimal representation of x, where 0 ＜ x ＜ 1, is the tenths digit of x nonzero?[br/](1)16x is an integer.[br/](2)8x is an integer. |
51% |
查看详情
|
DS-b728wk |
If x, y, and z are positive integers, is x - y odd?[br/](1)x = [math]z^2[/math][br/](2)y = [math](z-1)^2[/math] |
87% |
查看详情
|
DS-1d2z9k |
Is [math]x＜0[/math]?[br/](1) [math]-2x＞0[/math][br/](2) [math]x^3 ＜ 0[/math]
|
94% |
查看详情
|
PS-032jak |
The sum [math]7/8 + 1/9[/math] is between |
96% |
查看详情
|
PS-792hxk |
[img]PS11226.jpg[/img][br/]In the figure above, if z = 50, then x + y = |
92% |
查看详情
|
DS-892vvk |
Is x ＜ 0 ?[br/](1) [math]x^3 ＜ x^2[/math][br/](2) [math]x^3 ＜ x^4[/math] |
53% |
查看详情
|
PS-45216k |
If [math](7x)/3 + a = 8[/math] and a ＞ 8, then, in terms of a, [math](3x)/7 =[/math] |
84% |
查看详情
|
PS-0b2fwk |
Jack is now 14 years older than Bill. If in 10 years Jack will be twice as old as Bill, how old will Jack be in 5 years? |
81% |
查看详情
|
DS-16286k |
What is the value of 36.500(1.05)[br/](1)[math]n^2[/math]-5n+6=0[br/](2)[math]n-2!=0[/math] |
81% |
查看详情
|
DS-452bak |
Are all of the numbers in a certain list of 15 numbers equal?[br/](1)The sum of all the numbers in the list is 60.[br/](2)The sum of any 3 numbers in the list is 12. |
81% |
查看详情
|
PS-5a2kpk |
If n = 4p, where p is a prime number greater than 2, how many different positive even divisors does n have, including n ? |
60% |
查看详情
|
DS-e42ptk |
S is a set of points in the plane. How many distinct triangles can be drawn that have three of the points in S as vertices?[br/](1) The number of distinct points in S is 5.[br/](2) No three of the ... |
78% |
查看详情
|
DS-392afk |
If r ＞ 0 and s ＞ 0, is[math]r/s＜s/r[/math] ?[br/](1)[math]r/(3s)=1/4[/math][br/](2)s = r + 4 |
84% |
查看详情
|
DS-57322k |
Is p + pz = p?[br/](1)P = 0[br/](2)z = 0
|
92% |
查看详情
|
DS-5e1uhk |
A box contains 10 light bulbs, fewer than half of which are defective. Two bulbs are to be drawn simultaneously from the box. If n of the bulbs in box are defective, what is the value of n?[br/](1)... |
71% |
查看详情
|
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% |
查看详情
|
PS-a930ek |
Company C has a machine that, working alone at its constant rate, processes 100 units of a certain product in 5 hours. If Company C plans to buy a new machine that will process this product at a co... |
93% |
查看详情
|
DS-d11y0k |
If x and y are positive integers, what is the value of x?[br/](1)[math]3^x5^y = 1,125[/math][br/](2)y = 3 |
75% |
查看详情
|
PS-462j6k |
[img]PS1239.jpg[/img][br/]In the figure above, the point on segment PQ that is twice as far from P as from Q is |
74% |
查看详情
|
PS-8f3rvk |
The sum of the first n positive perfect squares, where n is a positive integer, is given by the formula [math]n^3/3+cn^2+n/6[/math], where c is a constant. What is the sum of the first 15 positive ... |
76% |
查看详情
|
PS-473rsk |
Machines A, B, and C can either load nails into a bin or unload nails from that bin. Each machine works at a constant rate that is the same for loading and for unloading, although the individual ma... |
80% |
查看详情
|
PS-6b2cok |
If a positive integer n is divisible by both 5 and 7, then n must also be divisible by which of the following?[br/]I 12[br/]II 35[br/]III 70 |
79% |
查看详情
|
DS-061upk |
Seven different numbers are selected from the integers 1 to 100, and each number is divided by 7. What is the sum of the remainders?[br/](1)The range of the seven remainders is 6.[br/](2)The seven ... |
52% |
查看详情
|
PS-4e2f1k |
An operation ◎ is defined by the equation a◎b=(a-b)/(a+b), for all numbers a and b such that a ≠ -b. If a ≠ -c and a ◎ c = 0, then c = |
94% |
查看详情
|
PS-8e3ruk |
An integer between 1 and 300, inclusive, is chosen at random. What is the probability that the integer so chosen equals an integer raised to an exponent that is an integer greater than 1? |
35% |
查看详情
|
DS-fa33hk |
If the sequence S has 300 terms, what is the 293rd term of S?[br/](1) The 298th term of S is -616, and each term of S after the first is 2 less than the preceding term.[br/](2) The first term of S ... |
92% |
查看详情
|
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% |
查看详情
|
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% |
查看详情
|
DS-231wqk |
If x and y are positive, is 4x ＞ 3y?[br/](1)x＞y - x[br/](2)[math]x/y ＜ 1[/math] |
73% |
查看详情
|
DS-20277k |
What was the revenue that a theater received from the sale of 400 tickets, some of which were sold at the full price and the remainder of which were sold at a reduced price?[br/](1)The number of ti... |
75% |
查看详情
|
TN模考试题22
