| 题号 |
题目内容 |
平均正确率 |
操作 |
DS-392bmk |
If n is a positive integer, what is the tens digit of n ?[br/](1)The hundreds digit of 10n is 6.[br/](2)The tens digit of n + 1 is 7. |
63% |
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DS-9c26yk |
While on a straight road, Car X and Car Y are traveling at different constant rates. If Car X is now 1 mile ahead of Car Y, how many minutes from now will Car X be 2 miles ahead of Car Y ?[br/](1)C... |
76% |
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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-a12hhk |
A television manufacturer produces 600 units of a certain model each month at a cost to the manufacturer of $90 per unit and all of the produced units are sold each month. What is the minimum selli... |
94% |
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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-0729pk |
In a random sample of 80 adults, how many are college graduates?[br/](1)In the sample, the number of adults who are noj college graduates is 3 times the number who are college graduates.[br/](2)In ... |
94% |
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DS-472pak |
If [math]x^2+y^2=1[/math], is x + y = 1?[br/](1) xy = 0[br/](2) y = 0 |
68% |
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PS-8d354k |
List T consists of 30 positive decimals, none of which is an integer, and the sum of the 30 decimals is S. The estimated sum of the 30 decimals, £, is defined as follows. Each decimal in T whose te... |
40% |
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DS-d833sk |
In the xy-coordinate plane, is point R equidistant from points (-3,-3) and (1,-3) ?[br/](1) The x-coordinate of point R is -1[br/](2) Point R lies on the line y = -3.
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72% |
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DS-972vhk |
What is the value of [math]t^(-1)[/math] ?[br/](1) [math]t^(-2) ＜ 1[/math][br/](2) [math]t^(-3) =1/27[/math] |
95% |
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PS-5124nk |
On a certain transatlantic crossing, 20 percent of a ship’s passengers held round-trip tickets and also took their cars abroad the ship. If 60 percent of the passengers with round-trip tickets did ... |
62% |
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PS-4f2dgk |
2, 4, 6, 8, n, 3, 5, 7, 9[br/]In the list above, if n is an integer between l and 10, inclusive, then the median must be |
93% |
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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-721zqk |
If [math]x != 0[/math], then [math](x + 1/x)^2 - (x - 1/x)^2 =[/math] |
92% |
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PS-952e8k |
List I: 3, 6, 8, 19[br/]List II: x, 3, 6, 8, 19[br/]If the median of the numbers in list I above is equal to the median of the numbers in list II above, what is the value of x ? |
93% |
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DS-1b2vck |
In the xy-plane, does the point (a, b) lie above the line y = x ?[br/](1) a = 2[br/](2) b = a + 2 |
69% |
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DS-9f297k |
The charge for a telephone call between City R and City S is $0.42 for each of the first 3 minutes and $0.18 for each additional minute. A certain call between these two cities lasted for x minutes... |
91% |
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PS-4522gk |
A certain roller coaster has 3 cars, and a passenger is equally likely to ride in any 1 of the 3 cars each time that passenger rides the roller coaster. If a certain passenger is to ride the roller... |
66% |
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PS-fe2d3k |
Kelly and Chris packed several boxes with books. If Chris packed 60 percent of the total number of boxes, what was the ratio of the number of boxes kelly packed to the number of boxes Chris packed? |
96% |
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DS-fa26mk |
What is the value of b + c ?[br/](1)ab + cd + ac + bd = 6[br/](2)a + d = 4 |
94% |
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DS-d52ykk |
If X, Y, and Z are positive integers, is Y＞X?[br/](1) [math]Y^2=XZ[/math][br/](2) Z-X＞0 |
82% |
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PS-982jlk |
y=kx+3[br/]In the equation above, k is a constant. If y = 17 when x = 2, what is the value of y when x = 4 ? |
97% |
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DS-9a2qtk |
Is x＞5 ?[br/](1) [math]x^2＞25[/math][br/](2) 2x+7＞0
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84% |
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PS-652ipk |
Raffle tickets numbered consecutively from 101 through 350 are placed in a box. What is the probability that a ticket selected at random will have a number with a hundreds digit of 2 ? |
77% |
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DS-d21wtk |
In 1997 there were 300 female employees at Company C. If the number of female
employees at Company C increased by 60 percent from 1977 to 1987, by what percent
did the number of female employees ... |
80% |
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DS-271vak |
If Ann saves x dollars each week and Beth saves y dollars each week, what is the total amount that they save per week?[br/](1)Beth saves $5 more per week than Ann saves per week.[br/](2)It takes An... |
95% |
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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-9437lk |
If [math](x+y)/z ＞ 0 [/math], is x < 0?[br/](1) x＜y[br/](2) z＜0 |
67% |
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PS-d61zxk |
R, S, T, and U are points on a line, and U is the midpoint of line segment ST. If the lengths of line segments RS, RT, and ST are 20, 4, and 24, respectively. What is the length of line segment RU? |
88% |
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DS-a42yvk |
If ¼ of the larger of two numbers is greater than 5 times the smaller of the same two numbers, is the smaller number less than 4?[br/](1) The larger number is greater than 70.[br/](2) The larger nu... |
78% |
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DS-3a2u8k |
Is | x |＜1?[br/](1) | x + 1 | = 2 | x - 1 |[br/](2) | x - 3 | ≠ 0
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70% |
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DS-ed30hk |
If u, v, and w are integers, is u ＞ 0 ?[br/](1) [math]u = v^2 + 1[/math][br/](2) [math]u = w^4 + 1[/math]
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95% |
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PS-d82pzk |
If the integer k is a multiple of 3, which of the following is also a multiple of 3 ? |
97% |
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PS-ea2dsk |
[math](7)/(1/5)+(5)/(1/7)[/math]= |
97% |
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DS-6928ck |
If n is a positive integer, is the value of b - a at least twice the value of [math]3^n - 2^n[/math] ?[br/](1)a = [math]2^(n + 1)[/math] and b= [math]3^(n + 1)[/math][br/](2)n = 3 |
74% |
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PS-d820wk |
Which of the following fractions has a decimal equivalent that is a terminating decimal? |
53% |
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DS-e51vkk |
What is the sum of a certain pair of consecutive odd integers?[br/](1)At least one of the integers is negative.[br/](2)At least one of the integers is positive. |
67% |
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TN模考试题03
