| 题号 |
题目内容 |
平均正确率 |
操作 |
PS-002gtk |
If the average (arithmetic mean) of the four numbers K, 2K + 3, 3K - 5, and 5K + 1 is 63, what is the value of K? |
95% |
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PS-c02etk |
Which of the following is the product of two integers whose sum is 11? |
90% |
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DS-7f1v0k |
[img]0420.jpg[/img][br/]In the parallelogram shown, what is the value of x?[br/](1)y = 2x[br/](2)x + z = 120 |
88% |
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PS-012ohk |
In the xy-plane, what is the slope of the line with equation 3x + 7y = 9? |
93% |
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PS-1c36pk |
A researcher computed the mean, the median, and the standard deviation for a set of performance scores. If 5 were to be added to each score, which of these three statistics would change? |
81% |
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PS-3224ck |
If the volume of a small container is 14,520 cubic millimeters, what is the volume of the container in cubic centimeters? (1 millimeter = 0.1 centimeter) |
89% |
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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-ea205k |
In 1995 a certain store had 1,800 tools in stock that had been purchased for $30 each. If 1,000 of these tools were sold in 1995 for $40 each and the remaining 800 were sold in 1996 for $50 each, h... |
87% |
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DS-2a1vqk |
If x and y are integers, is x + y greater than 0?[br/](1)x is greater than 0.[br/](2)y is less than 1. |
96% |
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DS-3b2wck |
If x and y are integers, is y an even integer?[br/](1) [math]2y – x = x^2 – y^2[/math][br/](2) x is an odd integer.
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42% |
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DS-2e28rk |
If n is a positive integer, is[math](1/10)^n[/math] ＜0.01[br/](1)n＞2[br/](2)[math](1/10)^(n-1)[/math]＜0.1 |
86% |
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DS-351y3k |
If a and b are integers, is b even?[br/](1)3a + 4b is even.[br/](2)3a + 5b is even. |
75% |
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DS-b62r5k |
Each week Connie receives a base salary of $500, plus a 20 percent commission on the total amount of her sales that week in excess of $1,500. What was the total amount of Connie’s sales last week?[... |
96% |
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DS-591vnk |
When 200 gallons of oil were removed from a tank, the volume of oil left in the tank was [math]3/7[/math] of the tank’s capacity. What was the tank’s capacity?[br/](1)Before the 200 gallons were re... |
91% |
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PS-7a20tk |
[math]sqrt[2sqrt63 + 2/(8+3sqrt7)] =[/math] |
91% |
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PS-702s9k |
An object thrown directly upward is at a height of h feet after t seconds, where [math]h=-16(t-3)^2+150[/math]. At what height, in feet, is the object 2 seconds after it reaches its maximum height? |
77% |
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PS-d42y5k |
To be eligible for retirement benefits at the Omega Corporation, the sum of an employee’s age, in years, and the number of years of employment must be at least 70. If x, where x ＜ 70, is a certain... |
49% |
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PS-812t4k |
If [math]P(r)=8r/(1-r)[/math], for what value of r does [math]P(r)=1/2(P(3))[/math]? |
77% |
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DS-641vbk |
If x is a positive integer, is the remainder 0 when [math]3^x + 1[/math] is divided by 10?[br/](1)x = 4n + 2, where n is a positive integer.[br/](2)x ＞ 4 |
82% |
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DS-4a2tgk |
If x＞1 and y＞1, is x＜y?[br/](1)[math](x^2)/(xy+x)＜1[/math][br/](2) [math](xy)/(y^2)-y＜1[/math]
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73% |
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DS-611uck |
p is an integer; n is an integer; and [math]p/n[/math] is an integer. Is [math]p/n[/math] odd?[br/](1)p is divisible by 4.[br/](2)n is divisible by 4. |
80% |
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PS-ae2o6k |
How many seconds will it take for a car that is traveling at a constant rate of 45 miles per hour to travel a distance of 220 yards? (1 mile = 1,760 yards) |
90% |
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DS-3c2ayk |
Machines X and Y produced identical bottles at different constant rates. Machine X, operating alone for 4 hours, filled part of a production lot; then Machine Y, operating alone for 3 hours, filled... |
70% |
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DS-852nsk |
Is the sum of [math]p^2[/math] and [math]q^2[/math] greater than 1?[br/](1) p is greater than [math]1/2[/math].[br/](2) q is greater than [math]1/2[/math]. |
84% |
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PS-212ihk |
A rectangular circuit board is designed to have width w inches, perimeter p inches, and area k square Inches. Which of the following equations must be true? |
90% |
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PS-b32hok |
A certain junior dass has 1,000 students and a certain senior dass has 800 students. Among these students, there are 60 sibling pairs, each consisting of 1 junior and 1 senior. If 1 student is to b... |
57% |
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DS-b229vk |
If a ＜ x ＜ b and c＜y＜d, is x＜y?[br/](1)a ＜ c[br/](2)b ＜ c |
93% |
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PS-2234bk |
At a supermarket John spent [math]1/2[/math] of his money on fresh fruits and vegetables,[math]1/3[/math] on meat products, and [math]1/10[/math] on bakery products. If he spent the remaining $6 on... |
95% |
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PS-4d2j7k |
If n is an integer, which of the following must be even? |
96% |
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DS-7a2x6k |
Is t between 35 and 55 ?[br/](1) t is between 38 and 49.[br/](2) t is between 42 and 52.
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91% |
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PS-0d21ck |
A certain business produced x rakes each month form November through February and shipped [math]x/2[/math] rakes at the beginning of each month from March through October. The business paid no stor... |
69% |
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PS-b52zgk |
A rabbit on a controlled diet is fed daily 300 grams of a mixture of two foods, food X and food Y. Food X contains 10 percent protein and food Y contains 15 percent protein. If the rabbit's diet pr... |
92% |
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DS-db276k |
An employee is paid 1.5 times the regular hourly rate for each hour worked in excess of 40 hours per week, excluding Sunday, and 2 times the regular hourly rate for each hour worked on Sunday. How ... |
80% |
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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-ac1x9k |
If wz ＜ 2, is z ＜ 1?[br/](1)w ＞ 2[br/](2)z ＜ 2 |
93% |
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DS-902wbk |
For a certain car repair, the total charge consisted of a charge for parts, a charge for labor, and a 6 percent sales tax on both the charge for parts and the charge for labor. If the charge for pa... |
83% |
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DS-c326jk |
Is x＞y?[br/](1)x = y + 2[br/](2)[math]x/2[/math] = y-1 |
90% |
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PREP模考试卷06
