| 题号 |
题目内容 |
平均正确率 |
操作 |
DS-772u1k |
In the xy-plane, the sides of a certain rectangle are parallel to the axes. If one of the vertices of the rectangle is (-1,-2), what is the perimeter of the rectangle?[br/](1) One of the vertices o... |
60% |
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DS-06269k |
What is the value of n in the equation -25 + 19 + n = s ?[br/](1)s = 2[br/](2)[math]n/s[/math] = 4 |
93% |
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DS-881x8k |
Is |v-x|＜8[br/](1)v and x are integers.[br/](2)|v|= 4 and |x|= 6 |
95% |
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DS-ce2a7k |
Three machines, K, M, and P, working simultaneously and independently at their respective constant rates, can complete a certain task in 24 minutes. How long does it take Machine K, working alone a... |
78% |
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PS-ef2jck |
[math]1-(1/2- 2/3)[/math]= |
94% |
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DS-d8345k |
[img]og13ds131.jpg[/img][br/] Six shipments of machine parts were shipped from a factory on two trucks, with each shipment entirely on one of the trucks. Each shipment was labeled either S1, S2, S3... |
51% |
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DS-722t0k |
Is [math]y^2=0[/math]?[br/](1) 3y=0[br/](2) [math]y^3=0[/math]
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97% |
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DS-1727tk |
Whenever Martin has a restaurant bill with an amount between $10 and $99, he calculates the dollar amount of the tip as 2 times the tens digit of the amount of his bill. If the amount of Martin's m... |
67% |
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DS-f41wlk |
Is the integer n odd?[br/](1)n is divisible by3.[br/](2)2n is divisible by twice as many positive integers as n. |
49% |
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PS-c43s6k |
If n is a positive integer greater than 1, then p(n) represents the product of all the prime numbers less than or equal to n. The second smallest prime factor of p(12) + 11 is |
38% |
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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% |
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PS-602eik |
The water from one outlet, flowing at a constant rate, can fill a swimming pool in 9 hours. The water from a second outlet, flowing at a constant rate, can fill the same pool in 5 hours. If both ou... |
94% |
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PS-5a36jk |
The sequence[math]a_1[/math],[math]a_2[/math],[math]a_3[/math].....[math]a_n[/math]…is such that [math]a_n = (a_(n-1)+a_(n-2))/2[/math] for all [math]n ≥3[/math]. If [math]a_3 = 4[/math] and [math]... |
90% |
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DS-19251k |
In a certain class, one student is to be selected at random to read. What is the probability that a boy will read?[br/](1)Two-thirds of the students in the class are boys.[br/](2)Ten of the student... |
83% |
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PS-b22e9k |
In a certain city, 60 percent of the registered voters are Democrats and the rest are Republicans. In a mayoral race, if 75 percent of the registered voters who are Democrats and 20 percent of the ... |
92% |
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PS-ca214k |
If x ＜ 0 and 0 ＜ y ＜ 1, which of the following has the greatest value? |
92% |
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PS-2523xk |
A certain right triangle has sides of length x, y, and z, where x ＜ y ＜ z. If the area of this triangular region is 1, which of the following indicates all of the possible values of y ? |
67% |
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DS-732nyk |
If (y+3)(y-1) – (y-2)(y-1) = r(y-1), what is the value of y?[br/](1) [math]r^2=25[/math][br/](2) r = 5[br/] |
63% |
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PS-6c2rfk |
A certain restaurant offers 6 kinds of cheese and 2 kinds of fruit for its dessert platter. If each dessert platter contains an equal number of kinds of cheese and kinds of fruit, how many differen... |
79% |
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DS-2d26ek |
If a real estate agent received a commission of 6 percent of the selling price of a certain house,what was the selling price of the house?[br/](1)The selling price minus the real estate agent's com... |
78% |
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PS-b031mk |
In a certain game, the units of currency of three countries are the crown, the shield, and the pound, respectively. If 2 crowns equal 3 shields and 3 shields equal 4 pounds, how many crowns equal 1... |
91% |
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PS-c0219k |
The ratio of the number of red cars in a certain parking lot to the number of black cars is 3 to 8. If there are 72 black cars in the lot, how many red cars are there in the lot? |
97% |
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DS-7a26dk |
If d denotes a decimal, is d ≥ 0.5?[br/](1)When d is rounded to the nearest tenth, the result is 0.5.[br/](2)When d is rounded to the nearest integer, the result is 1. |
86% |
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DS-032uok |
If [math]R = P/Q[/math] , is R ≤ P ?[br/](1) P ＞ 50[br/](2) 0 ＜ Q ≤ 20 |
69% |
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PS-d92flk |
Of the 3,600 employees of Company X, [math]1/3[/math] are clerical. If the clerical staff were to be reduced by [math]1/3[/math], what percent of the total number of the remaining employees would t... |
66% |
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|
PS-6134rk |
If [math]n = 3^8-2^8[/math], which of the following is NOT a factor of n ? |
74% |
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PS-433s8k |
[math]x^8-y^8=[/math] |
90% |
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DS-1225pk |
What number is 15 percent of x ?[br/](1)18 is 6 percent of x.[br/](2)[math]2/3[/math] of x is 200. |
93% |
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DS-47273k |
On a company-sponsored cruise, [math]2/3[/math] of the passengers were company employees and the remaining passengers were their guests. If [math]3/4[/math]of the company-employee passengers were m... |
95% |
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PS-f424pk |
[img]1423.jpg[/img][br/]Data for a certain biology experiment are given in the table above. If the amount of bacteria present increased by the same fraction during each of the two 3-hour periods sh... |
74% |
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PS-761z3k |
[img]0136.jpg[/img][br/]On the number line, the shaded interval is the graph of which of the following inequalities? |
93% |
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PS-df2pmk |
If xy=165, where x and y are positive integers and x＞y, what is the least possible value of x – y ? |
86% |
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PS-f42tck |
A farmer produced 750 bushels of a certain crop at a cost of $20 per bushel. If the farmer sold [math]2/3[/math] of the bushels for double their production cost and sold the remaining bushels at 25... |
81% |
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DS-da29tk |
If r is represented by the decimal 0.t5, what is the digit t?[br/](1)r＜[math]1/3[/math][br/](2)r＜[math]1/10[/math] |
87% |
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PS-842eak |
A certain company retirement plan has a "rule of 70" provision that allows an employee to retire when the employee's age plus years of employment with the company total at least 70. In what year co... |
80% |
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PS-933s7k |
Set S consists of 5 values, not necessarily in ascending order: {4, 8, 12, 16, x}. For how many values of x does the mean of set S equal the median of set S? |
55% |
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DS-9437sk |
If p is the perimeter of rectangle Q, what is the value of p ?[br/](1) Each diagonal of rectangle Q has length 10.[br/](2) The area of rectangle Q is 48.
|
82% |
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PREP模考试卷02
