搜索结果 | GMAT考满分，百万出国党的口碑之选。

GMAT考满分·题库

收录题目9362道

按指定内容搜索

搜索结果共715条

来源	题目内容
PREP07 Test 1	It seems likely that a number of astronomical phenomena, such as the formation of planetary nebulas, may be caused by the interaction where two stars orbit each other at close range.
PREP07 Test 1	If x is an integer, is $$(x^2 + 1)(x + 5)$$ an even number?(1) x is an odd number.(2) Each prime factor of $$x^2$$ is greater than 7.
PREP07 Test 1	If a equals the sum of the even integers from 2 to 20, inclusive, and b equals the sum of the odd integers from 1 to 19, inclusive, what is the value of a - b ?
PREP07 Test 1	The Swedish warship Vasa, sunk in 1628 and raised in 1961, was preserved in the cold water of Stockholm harbor, where low salinity inhibits the growth of marine borers that in most seas devour every exposed scrap of a sunken ship's wooden hull.
PREP07 Test 1	A certain theater has a total of 884 seats, of which 500 are orchestra seats and the rest are balcony seats. When tickets for all the seats in the theater are sold, the total revenue from ticket sales is $34,600. What was the theater's total revenue from ticket sales for last night's performance?(1) The price of an orchestra seat ticket is twice the price of a balcony seat ticket.(2) For last night's performance, tickets for all the balcony seats were sold, but only 80 percent of the tickets for the orchestra seats were sold.
PREP07 Test 1	. The cost to park a car in a certain parking garage is $8.00 for up to 2 hours of parking and $1.75 for each hour in excess of 2 hours. What is the average (arithmetic mean) cost per hour to park a car in the parking garage for 9 hours?
PREP07 Test 1	According to scientists at the University of Alaska, while the surface temperature of the globe has risen over the last century by about one degree Fahrenheit, the surface temperature in Alaska, Siberia, and northwestern Canada has increased in the previous thirty years by about five degrees.
PREP07 Test 1	A set of 15 different integers has a median of 25 and a range of 25. What is the greatest possible integer that could be in this set?
PREP07 Test 1	If it took Carol 1/2 hour to cycle from his house to the library yesterday, was the distance that he cycled greater than 6 miles? ( 1mile=5,280feet)(1) The average speed at which Carlos cycled from his house to the library yesterday was greater than 16 feet per second.(2) The average speed at which Carlos cycled from his house to the library yesterday was less than 18 feet per second
PREP07 Test 1 GWD	On Earth, among the surest indications of sunspot cycles are believed to be the rate that trees grow, as seen in the rings visible in the cross sections of their trunks.
PREP07 Test 1	At a certain pet shop,$$\frac{1}{3}$$ of the pets are dogs and $$\frac{1}{5}$$ of the pets are birds. How many of the pets are dogs?(1)There are 30 birds at the pet shop.(2)There are 20 more dogs than birds at the pet shop.
PREP07 Test 1	If x and y are integers and $${3}^{x-4}={3}^{y+2}$$, what is y in terms of x ?
PREP07 Test 1	In human hearing, subtle differences in how the two ears hear a given sound help the listener determine the qualities of that sound.
PREP07 Test 1	To fill an order on schedule, a manufacturer had to produce 1,000 tools per day for n days. What is the value of n ?(1) Because of production problems, the manufacturer produced only 600 tools per day during the first 5 days. (2) Because of production problems, the manufacturer had to produce 1,500 tools per day on each of the last 4 days in order to meet the schedule.
PREP07 Test 1	If $${5}^{21}{4}^{11}={2}({10})^{n}$$ what is the value of n ?
PREP07 Test 1	The federal rules aimed at protecting human subjects of medical experiments were established to ensure that patients must be warned of potential risks and an independent panel would evaluate the experiment before it was conducted.
PREP07 Test 1	If x is a positive integer, what is the least common multiple of x, 6, and 9 ?(1)The least common multiple of x and 6 is 30.(2)The least common multiple of x and 9 is 45.
PREP07 Test 1	The rate of a certain chemical reaction is directly proportaional to the square of the concentration of chemical A present and inversely proportional to the concentration of chemical B present. If the concentration of chemical B is increased by 100%, which of the following is closest to the percent change in the concentration of chemical A required to keep the reaction rate unchanged?
PREP07 Test 1	According to a 1996 study published in the Journal of Human Resources, Americans of Middle Eastern descent were twice as likely as was the national average to be self-employed.
PREP07 Test 1	In the figure shown, the measure of angle PRS is how many degrees greater than the measure of angle PQR ?(1) The measure of angle QPR is 30°(2) The sum of the measures of angles PQR and PRQ is 150°