| 题号 |
题目内容 |
平均正确率 |
操作 |
DS-ed267k |
If x,y, and z are nonzero numbers, is xz - 12?[br/](1)[math]x^2[/math]yz= 12xy[br/](2)[math]z/4=3/x[/math] |
87% |
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DS-1b2z4k |
The positive integer k has exactly two positive prime factors, 3 and 7. If k has a total of 6 positive factors, including 1 and k, what is the value of k?[br/](1) [math]3^2[/math] is a factor of k.... |
38% |
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PS-fa2idk |
If n is a positive integer, then n(n + l)(n + 2) is |
83% |
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PS-db2fbk |
In a small snack shop, the average (arithmetic mean) revenue was $400 per day over a 10-day period. During this period, if the average daily revenue was $360 for the first 6 days, what was the aver... |
97% |
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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
|
64% |
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PS-f72d1k |
In a certain population, there are 3 times as many people aged 21 or under as there are people over 21. The ratio of those 21 or under to the total population is |
77% |
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DS-1a25qk |
3.2□△6[br/]If □ and △ each represent single digits in the decimal above, what digit does □ represent?[br/](1)When the decimal is rounded to the nearest tenth, 3.2 is the result[br/](2)When the deci... |
83% |
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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-b73iwk |
A circular table has a glass center with a diameter of 4x inches, which is surrounded by a metal ring with a width of 2 inches. In terms of x, what fraction of the table's surface is made up by the... |
72% |
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DS-612vsk |
If p, s, and t are positive prime numbers, what is the value of [math]p^3s^3t^3[/math] ?[br/](1) [math]p^3st = 728[/math][br/](2) t = 13
|
65% |
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DS-512q6k |
If Antonio bought two half-gallon cartons of ice cream during a special sale, what percent of the total regular price of the two cartons did he save?[br/](1) Antonio paid the regular price for the ... |
67% |
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PS-aa1ynk |
A certain university will select 1 of 7 candidates eligible to fill a position in the mathematics department and 2 of 10 candidates eligible to fill 2 identical positions in the computer science de... |
87% |
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DS-211vlk |
What is the ratio of the average (arithmetic mean) height of students in class X to the average height of students in class Y?[br/](1)The average height of the students in class X is 120 centimeter... |
75% |
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PS-d62jjk |
Of the following, which is the closest approximation of [math]50.2*0.49/199.8[/math] |
83% |
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PS-bb3ivk |
Note: Figure not drawn to scale.[br/]A rectangular yard (white area) is surrounded by a hedge (shaded region) with a length of 15 meters and a width of 12 meters, as shown in the figure above. The ... |
68% |
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DS-3a2psk |
There were 2 apples and 5 bananas in a basket. After additional apples and bananas were placed in the basket, the ratio of the number of apples to the number of bananas was [math]1/2[/math]. How ma... |
88% |
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DS-462u2k |
A certain circle in the xy-plane has its center at the origin. If P is a point on the circle, what is the sum of the squares of the coordinates of P?[br/](1) The radius of the circle is 4.[br/](2) ... |
69% |
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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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PS-0a3ixk |
For any numbers x and y, x◇y = 2x - y - xy. If x◇y = 0, then which of the following CANNOT be y? |
76% |
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PS-0c2kbk |
if [math]t=1/(2^9*5^3)[/math] is expressed as a terminating decimal,how many zeros will t have between the decimal point and the first nonzero digit to the right of the decimal point? |
62% |
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DS-53293k |
In College X the number of students enrolled in both a chemistry course and a biology course is how much less than the number of students enrolled in neither?[br/](1)In College X there are 60 stude... |
94% |
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DS-b1261k |
What is the tenths digit in the decimal representation of a certain number?[br/](1)The number is less than [math]1/3[/math][br/](2)The number is greater than [math]1/4[/math] |
84% |
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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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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-8633lk |
The average (arithmetic mean) price of the 3 items that Kate purchased from a clothing store was $50. If there was no sales tax on any item that had a price of less than $80 and 6 percent sales tax... |
85% |
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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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PS-eb3izk |
Three medical experts, working together at the same constant rate, can write an anatomy textbook in 24 days. How many additional experts, working together at this same constant rate, are needed to ... |
76% |
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PS-9b231k |
A certain company assigns employees to offices in such a way that some of the offices can be empty and more than one employee can be assigned to an office. In how many ways can the company assign 3... |
72% |
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DS-0e1uak |
If n is a positive integer that is less than 10, what is the value of n?[br](1)n is the tenth digit in the decimal representation of [math]1/n[/math].[br](2)n is the hundredth digit in the decimal ... |
50% |
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PS-2d2hck |
[img]PS11205.jpg[/img][br/]In the table above, what is the number of green marbles in Jar R ? |
94% |
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DS-072x9k |
If r ＞ 0, is rs ＜ 0 ?[br/](1) s ＜ 0[br/](2) s ＜ r |
97% |
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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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DS-971wzk |
If w and c are integers, is w ＞ 0?[br/](1)w + c ＞ 50[br/](2)c＞48 |
78% |
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PS-8c2itk |
If the area of a square region having sides of length 6 centimeters is equal to the area of a rectangular region having width 2.5 centimeters, then the length of the rectangle, in centimeters, is |
96% |
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DS-0f28zk |
[img]DS11152.jpg[/img][br/]If arc PQR above is a semicircle, what is the length of diameter [math]barPR[/math] ?[br/](1)a = 4[br/](2)b = 1 |
71% |
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PS-612cqk |
If x = -3, what is the value of -3(x^2) ? |
94% |
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PS-2923uk |
A box contains exactly 24 balls, of which 12 are red and 12 are blue. If two balls are to be picked from this box at random and without replacement, what is the probability that both balls will be ... |
92% |
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TN模考试题09
