题库 | 考满分，百万出国党的口碑之选。

序号	题目内容
141	If $${n}={3}^{8}-{2}^{8}$$, which of the following is NOT a factor of n ?
142	In the figure shown, if the area of the shaded region is 3 times the area of the smaller circular region, then the circumference of the larger circle is how many times the circumference of the smaller circle?
143	Club X has more than 10 but fewer than 40 members. Sometimes the members sit at tables with 3 members at one table and 4 members at each of the other tables, and sometimes they sit at tables with 3 members at one table and 5 members at each of the other tables. If they sit at tables with 6 members at each table except one and fewer than 6 members at that one table, how many members will be at the table that has fewer than 6 members?
144	In order to complete a reading assignment on time, Terry planned to read 90 pages per day. However, she read only 75 pages per day at first, leaving 690 pages to be read during the last 6 days before the assignment was to be completed. How many days in all did Terry have to complete the assignment on time?
145	if $$s >0$$ and $$\sqrt{\frac{r}S}=s$$,what is r in terms of s ?
146	If a=-0.3 which of the following is true?
147	Mary's income is 60 percent more than Tim's income, and Tim's income is 40 percent less than Juan's income. What percent of Juan's income is Mary's income?
148	Each · in the mileage table above represents an entry indicating the distance between a pair of the five cities. If the table were extended to represent the distances between all pairs of 30 cities and each distance were to be represented by only one entry, how many entries would the table then have?
149	The ratio of the length to the width of a rectangular advertising display is approximately 3.3 to 2. If the width of the display is 8 meters, what is the approximate length of the display, in meters?
150	P, r, s, t, uAn arithmetic sequence is a sequence in which each term after the first is equal to the sum of the preceding term and a constant.If the list of letters shown above is an arithmetic sequence, which of the following must also be an arithmetic sequence?I 2P, 2r, 2s, 2t, 2uII P-3, r-3, s-3, t-3, u-3III $${P}^{2}$$, $${r}^{2}$$, $${s}^{2}$$, $${t}^{2}$$, $${u}^{2}$$
151	If 3 < x < 100, for how many values of x is $$\frac{x}{3}$$the square of a prime number?
152	A researcher plans to identify each participant in a certain medical experiment with a code consisting of either a single letter or a pair of distinct letters written in alphabetical order. What is the least number of letters that can be used if there are 12 participants, and each participant is to receive a different code?
153	The graph of which of the following equations is a straight line that is parallel to line l in the figure above?
154	An object thrown directly upward is at a height of h feet after t seconds, where $${h}=-{16}({t}-{3})^{2}+{150}$$. At what height, in feet, is the object 2 seconds after it reaches its maximum height?
155	Which of the following is equivalent to the pair of inequalities x + 6>10 and $$x-3\le5$$
156	David has d books, which is 3 times as many as Jeff and $$\frac{1}{2}$$ as many as Paula. How many books do the three of them have altogether, in terms of d
157	List I: 3, 6, 8, 19List II: x, 3, 6, 8, 19If the median of the numbers in list I above is equal to the median of the numbers in list II above, what is the value of x ?
158	There are 8 teams in a certain league and each team plays each of the other teams exactly once. If each game is played by 2 teams, what is the total number of games played?
159	An operation ◎ is defined by the equation a◎b=(a-b)/(a+b), for all numbers a and b such that a ≠ -b. If a ≠ -c and a ◎ c = 0, then c =
160	The price of lunch for 15 people was $207.00,including a 15 percent gratuity for service. What was the average price per person, EXCLUDING the gratuity?

序号

题目内容

141

If $${n}={3}^{8}-{2}^{8}$$, which of the following is NOT a factor of n ?

142