| 题号 |
题目内容 |
平均正确率 |
操作 |
PS-933s9k |
Skier Lindsey Vonn completes a straight 300-meter downhill run in t seconds and at an average speed of (x + 10) meters per second. She then rides a chairlift back up the mountain the same distance ... |
62% |
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PS-a22qik |
Which of the following is closest in value to [math]9^9–9^2[/math] ? |
88% |
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PS-4b2wwk |
The sum of the first k positive integers is equal to [math](k（k+1）)/2[/math]. What is the sum of the integers from n to m, inclusive, where 0 ＜ n ＜ m ? |
80% |
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PS-5b2gsk |
Car X and Car Y traveled the same 80-mile route. If Car X took 2 hours and Car Y traveled at an average speed that was 50 percent faster than the average speed of Car X, how many hours did it take ... |
94% |
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DS-3b2v8k |
Is t greater than v ?[br/](1) t is greater than 3.[br/](2) v is less than 5.
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97% |
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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-351txk |
[img]0132.jpg[/img][br/]Each of the letters in the table above represents one of the numbers 1, 2, or 3, and each of these numbers occurs exactly once in each row and exactly once in each column. W... |
64% |
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DS-f51xmk |
What was the percent increase in the average (arithmetic mean) contribution per member of a certain public radio station from 1985 to 1995 ?[br/](1)Total contributions by members increased from $50... |
72% |
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PS-6a2glk |
If x * y = xy - 2(x + y) for all integers x and y, then 2 * (-3) = |
97% |
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DS-c628lk |
In a certain business, production index p is directly proportional to efficiency index e, which is in turn directly proportional to investment index i. What is p if i = 70 ?[br/](1)e = 0.5 whenever... |
60% |
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PS-5b2p5k |
In the rectangular coordinate system, points (4, 0) and (-4, 0) both lie on circle C. What is the maximum possible value of the radius of C ? |
77% |
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DS-141udk |
What is the value of the integer N?[br/](1)101 ＜ N ＜ 103[br/](2)202 ＜ 2N ＜ 206 |
93% |
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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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PS-d924fk |
When positive integer x is divided by positive integer y, the remainder is 9. If [math]x/y = 96.12[/math], what is the value of y? |
83% |
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DS-e42qzk |
If b, c, and d are constants and [math]x^2 + bx + c = (x + d)^2[/math] for all values of x, what is the value of c?[br/](1) d = 3[br/](2) b = 6
|
58% |
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DS-042bhk |
If n is a positive integer and k = [math]5.1 * 10^n[/math], what is the value of k ?[br/](1)6,000 ＜ k ＜ 500,000[br/](2)[math]k^2 = 2.601 * 10^9[/math] |
76% |
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DS-8430kk |
If I and k are lines in the xy-plane, is the product of the slopes of I and k equal to -1 ?[br/](1)Line I passes through the origin and the point (1, 2).[br/](2)Line k has x-intercept 4 and y-inter... |
81% |
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DS-ad2alk |
[img]ds2973.png[/img][br/]On the number line above, p, q, r, s, and t are five consecutive even integers in increasing order. What is the average (arithmetic mean) of these five integers?[br](1)q +... |
83% |
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PS-c72jhk |
[math]sqrt80+sqrt125[/math]= |
96% |
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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-a42d2k |
[img]PS1151.jpg[/img][br/]In the figure above, the value of y is |
95% |
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DS-57322k |
Is p + pz = p?[br/](1)P = 0[br/](2)z = 0
|
92% |
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DS-9f2vfk |
Of the people who attended a workshop, 60 percent were teachers and some of the teachers were teachers of language arts. What percent of the people who attended the workshop were teachers of langua... |
82% |
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PS-a42wmk |
[math]（1/(4-sqrt(15))）^2=[/math] |
90% |
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DS-571uxk |
What was the cost of a certain telephone call?[br/](1)The call lasted 8 minutes.[br/](2)The cost of the first minute of the call was $0.32, which was twice the cost of each minute of the call after... |
97% |
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PS-f72wnk |
[img]20120408154717457_3767.jpg[/img][br/]There are 161 employees at Company X. The above table shows the age category of all the employees. According to the table, if m is the median age, in years... |
89% |
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PS-1d24jk |
There are 11 women and 9 men in a certain club. If the club is to select a committee of 2 women and 2 men, how many different such committees are possible? |
91% |
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DS-f21ulk |
What is the total number of executives at Company P?[br/](1)The number of male executives is [math]3/5[/math] the number of female executives.[br/](2)There are 4 more female executives than male ex... |
96% |
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PS-d91zmk |
If 5x = 2y and [math]xy != 0[/math], then x is what percent of y? |
98% |
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DS-b61xjk |
In 1993 Mr. Jacobs paid 4.8 percent of his taxable income in state taxes. In 1994 what percent of Mr. Jacobs’ taxable income did he pay in state taxes?[br/](1)In 1993 Mr. Jacobs’s taxable income wa... |
65% |
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DS-9525nk |
In △PQR, if PQ = x, QR = x + 2, and PR = y, which of the three angles of △PQR has the greatest degree measure?[br/](1)y=x + 3[br/](2)x = 2 |
86% |
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PS-01348k |
The numbers of cars sold at a certain dealership on six of the last seven business days were 4, 7, 2, 8, 3, and 6, respectively. If the number of cars sold on the seventh business day was either 2,... |
92% |
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DS-602sjk |
Sue’s monthly earnings consist of a monthly salary and a 4 percent commission on the portion of her monthly sales that is in excess of $2,000. If Sue’s monthly salary was the same in July as in Aug... |
62% |
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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-942zwk |
If x is a negative integer, which of the following expressions has the LEAST value? |
93% |
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DS-112qok |
What is the value of [math](2x–5)^3[/math] ?[br/](1) [math](2x)^3=216[/math][br/](2) [math](2x+3)^2=81[/math]
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81% |
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PS-572hik |
If 4x + 3y = -2 and 3x + 6 = 0, what is the value of y? |
94% |
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PREP模考试卷05
