题库 | 考满分，百万出国党的口碑之选。

序号	题目内容
101	For the positive numbers, n, n + 1, n + 2, n + 4, and n + 8, the mean is how much greater than the median
102	If T = $$\frac{5}{9}$$(K - 32), and if T = 290, then K =
103	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 outlets are used at the same time, approximately what is the number of hours required to fill the pool?
104	If a square mirror has a 20-inch diagonal, what is the approximate perimeter of the mirror, in inches?
105	The present ratio of students to teachers at a certain school is 30 to 1. If the student enrollment were to increase by 50 students and the number of teachers were to increase by 5, the ratio of students to teachers would then be 25 to 1. What is the present number of teachers?
106	What is the smallest integer n for which $${25}^{n} >{5}^{12}$$ ?
107	Sixty percent of the members of a study group are women, and 45 percent of those women are lawyers. If one member of the study group is to be selected at random, what is the probability that the member selected is a woman lawyer?
108	Each year for 4 years, a farmer increased the number of trees in a certain orchard by $$\frac{1}{4}$$ of the number of trees in the orchard the preceding year. If all of the trees thrived and there were 6,250 trees in the orchard at the end of the 4-year period, how many trees were in the orchard at the beginning of the 4-year period?
109	According to the chart shown, which of the following is closest to the median annual number of shipments of manufactured homes in the United States for the years from 1990 to 2000,inclusive?
110	For the positive integers a, b, and k, $${a}^{k}$$ \|\| b means that $${a}^{k}$$ is a divisor of b, but $${a}^{k+1}$$ is not a divisor of b. If k is a positive integer and $${2}^{k}$$ \|\| 72, then k is equal to
111	if $${t}=\frac{1}{(2^9*5^3)}$$ 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?
112	A certain characteristic in a large population has a distribution that is symmetric about the mean m. If 68 percent of the distribution lies within one standard deviation d of the mean, what percent of the distribution is less than m + d ?
113	In a certain district, the ratio of the number of registered Republicans to the number of registered Democrats was $$\frac{3}{5}$$.After 600 additional Republicans and 500 additional Democrats registered, the ratio was $$\frac{4}{5}$$.After these registrations, there were how many more voters in the district registered as Democrats than as Republicans?
114	In Country C, the unemployment rate among construction workers dropped from 16 percent on September 1, 1992, to 9 percent on September 1, 1996. If the number of construction workers was 20 percent greater on September 1, 1996, than on September 1, 1992, what was the approximate percent change in the number of unemployed construction workers over this period?
115	A pharmaceutical company received $3 million in royalties on the first $20 million in sales of the generic equivalent of one of its products and then $9 million in royalties on the next $108 million in sales. By approximately what percent did the ratio of royalties to sales decrease from the first $20 million in sales to the next $108 million in sales?
116	If p is the product of the integers from 1 to 30, inclusive, what is the greatest integer k for which $$3^k$$ is a factor of p?
117	If $${n}={3}^{8}-{2}^{8}$$, which of the following is NOT a factor of n ?
118	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?
119	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?
120	if $$s >0$$ and $$\sqrt{\frac{r}S}=s$$,what is r in terms of s ?

序号

题目内容

101

For the positive numbers, n, n + 1, n + 2, n + 4, and n + 8, the mean is how much greater than the median

102

If T = $$\frac{5}{9}$$(K - 32), and if T = 290, then K =

103

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 outlets are used at the same time, approximately what is the number of hours required to fill the pool?

104

If a square mirror has a 20-inch diagonal, what is the approximate perimeter of the mirror, in inches?

105

The present ratio of students to teachers at a certain school is 30 to 1. If the student enrollment were to increase by 50 students and the number of teachers were to increase by 5, the ratio of students to teachers would then be 25 to 1. What is the present number of teachers?