| 题号 |
题目内容 |
平均正确率 |
操作 |
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-a61wmk |
A certain list consists of 3 different numbers. Does the median of the 3 numbers equal the average (arithmetic mean) of the 3 numbers?[br/](1)The range of the 3 numbers is equal to twice the differ... |
59% |
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DS-c233vk |
If r and s are positive integers, can the fraction r/s be expressed as a decimal with only a finite number of nonzero digits?[br/](1) s is a factor of 100[br/](2) r is a factor of 100
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64% |
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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% |
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PS-892qck |
In a box of 12 pens, a total of 3 are defective. If a customer buys 2 pens selected at random from the box, what is the probability that neither pen will be defective? |
90% |
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PS-c32qek |
If [math]a_1=1[/math] and [math]a_(n+1)=1+1/(a_n)[/math] for all n ≥ 1, what is the value of [math]a_5[/math] ? |
96% |
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PS-942zwk |
If x is a negative integer, which of the following expressions has the LEAST value? |
93% |
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PS-532w1k |
If x, y, and z are consecutive even positive integers, which of the following could be equal to x + y + z ? |
88% |
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DS-de1wfk |
A clothing store acquired an item at a cost of x dollars and sold the item for y dollars. The store’s gross profit from the item was what percent of its cost for the item?[br/](1)y - x = 20[br/](2)... |
83% |
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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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DS-e02s5k |
If the average (arithmetic mean) of 5 different numbers is 12, what is the median of the 5 numbers?[br/](1) The median of the 5 numbers is equal to [math]1/3[/math] of the sum of the 4 numbers othe... |
81% |
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DS-191yek |
Is the sum of the integers x and y a prime number?[br/](1)x is an even prime number.[br/](2)y is a prime number between 10 and 20. |
88% |
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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
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80% |
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PS-c03shk |
For which of the following functions f(x) is the relation f(f(x)) = f(f(f(f(x)))) NOT true for at least some values of x not equal to zero? |
69% |
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DS-fb1vgk |
[img]0523.jpg[/img][br/]The figure above shows two entries, indicated by m and n, in an addition table. What is the value of n + m?[br/](1)d + y = -3[br/](2)e + z = 12 |
87% |
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DS-13346k |
lf x, y, and z are three-digit positive integers and if x = y+ z, iS the hundreds digit of x equal to the sum of the hundreds digits of y and z ?[br/](1) The tens digit of x is equal to the sum of ... |
65% |
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DS-b62xok |
In planning for a trip, Joan estimated both the distance of the trip, in miles, and her average speed, in miles per hour. She accurately divided her estimated distance by her estimated average spee... |
62% |
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DS-bc1wjk |
Max has $125 consisting of bills each worth either $5 or $20. How many bills worth $5 does Max have?[br/](1)Max has fewer than 5 bills worth $5 each.[br/](2)Max has more than 5 bills worth $20 each. |
69% |
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DS-372shk |
If x and y are positive integers and y =[math]sqrt(9-x)[/math] , what is the value of y?[br/](1) x ＜8[br/](2) y ＞ 1
|
64% |
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DS-bb29kk |
Jerry bought 7 clothing items, including a coat, and the sum of the prices of these items was $365. If there was no sales tax on any clothing item with a price of less than $100 and a 7 percent sal... |
88% |
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PS-c82gxk |
If the operation ? is defined for all a and b by the equation a?b=[math]a^2b/3[/math],then2?(3?(-1)) |
91% |
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PS-0b2zkk |
If [math]1/2[/math] of the money in a certain trust fund was invested in stocks, [math]1/4[/math] in bonds, [math]1/5[/math] in a mutual fund, and the remaining $10,000 in a government certificate,... |
89% |
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DS-342z8k |
If n is a member of the set {33, 36, 38, 39, 41, 42}, what is the value of n?[br/](1)n is even.[br/](2)n is a multiple of 3.
|
93% |
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DS-39270k |
If a certain animated cartoon consists of a total of 17,280 frames on film, how many minutes will it take to run the cartoon?[br/](1)The cartoon runs without interruption at the rate of 24 frames p... |
84% |
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DS-762zzk |
What is the remainder when the positive integer n is divided by 6 ?[br/](1)n is a multiple of 5.[br/](2)n is a multiple of 12.
|
91% |
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PS-d12hnk |
If m ＞ 0 and x is m percent of y, then, in terms of m, y is what percent of x ? |
61% |
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|
PS-972gvk |
Drum X is [math]1/2[/math] full of oil and Drum Y, which has twice the capacity of Drum X, is [math]2/3[/math] full of oil. If all of the oil in Drum X is poured into Drum Y, then Drum Y will be fi... |
86% |
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DS-612w9k |
What is the probability that event E or event F or both will occur?[br/](1) The probability that event E will occur is 0.6.[br/](2) The probability that event F will occur is 0.4.
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46% |
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PS-6a2c8k |
If x and y are prime numbers, which of the following CANNOT be the sum of x and y |
89% |
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PS-ec220k |
[img]0731.jpg[/img][br/]In the figure, what is the area of triangular region BCD ? |
96% |
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PS-fc2gkk |
A company accountant estimates that airfares next year for business trips of a thousand miles or less will increase by 20 percent and airfares for all other business trips will increase by 10 perce... |
94% |
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PS-dc3sgk |
An ant is clinging to one corner of a box in the shape of a cube. The ant wants to get to the most distant corner of the box by crawling only along the edges of the cube and without ever revisiting... |
30% |
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DS-f033tk |
Is the positive two-digit integer N less than 40 ?[br/](1) The units digit of N is 6 more than the tens digit[br/](2) N is 4 less than 4 times the units digit.
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65% |
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PS-842tqk |
At the opening of a trading day at a certain stock exchange, the price per share of stock K was $8. If the price per share of stock K was $9 at the closing of the day, what was the percent increase... |
95% |
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PS-5b317k |
The total price of a basic computer and a printer was $2,500. If the same printer had been purchased with an enhanced computer whose price was $500 more than the price of the basic computer, then t... |
82% |
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PS-702f3k |
According to a car dealer's sales report, [math]1/3[/math] of the cars sold during a certain period were sedans and [math]1/5[/math] of the other cars sold were station wagons. If N station wagons ... |
53% |
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PS-652ukk |
A cash register in a certain clothing store is the same distance from two dressing rooms in the store. If the distance between the two dressing rooms is 16 feet, which of the following could be the... |
88% |
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PREP模考试卷09
