破解版07 题目总数：1422 做题总人数：26970 平均准确率：71.6%
A box contains 100 balls, numbered from 1 to 100. If three balls are selected at random and with replacement from the box, what is the probability that the sum of the three numbers on the balls selected from the box will be odd?
来源：破解版07 1417人已做 700难度 56.7%正确率
The 15 homes in a new development are each to be sold for one of three different prices so that the developer receives an average (arithmetic mean) of $200,000 per home. If 4 of the homes are to be sold for $170,000 each and 5 are to be sold for $200,000 each, what will be the selling price of each of the remaining 6 homes?
来源：破解版07 389人已做 650难度 93.3%正确率
来源：GWD–TN24套 、破解版07 、Manhattan 、破解版08 、破解版12 、精选题库 、其他题库 、测评题 、Magoosh 、逻辑分类考点 、OG21新题 206人已做 600难度 93.2%正确率
A certain class, consisting of a lecture and a question-and-answer session, lasted from 2:45 to 4:30 one afternoon. If the lecture lasted from 2:45 to 4:15, then the question-and-answer session was what fraction of the total class time?
来源：破解版07 556人已做 650难度 88.5%正确率
The table shows the number of residents in a certain development who are willing to contribute to build a swimming pool, provided the required contribution does not exceed the amount indicated by the resident. The following three amounts are being considered as the required contribution. Which would ensure that more than half of the residents contribute to build the pool?Ⅰ.$33 Ⅱ.$48Ⅲ.$55
来源：破解版07 576人已做 650难度 64.9%正确率
If S=[n(n+1)] /2 and n = 40, then S =
来源：破解版07 389人已做 600难度 92.3%正确率
In a survey of 248 people, 156 are married, 70 are self-employed, and 25 percent of those who are married are self-employed. If a person is to be randomly selected from those surveyed, what is the probability that the person selected will be self-employed but not married?
来源：破解版07 230人已做 650难度 77.4%正确率
A circular cloth with a diameter of 20 inches is placed on a circular tray with a diameter of 24 inches. What fraction of the tray's surface is not covered by the cloth?
来源：破解版07 350人已做 650难度 88.9%正确率
If x and y are positive, which of the following must be greater than 1/√（x+y） ?
来源：破解版07 635人已做 700难度 71%正确率
Square S is inscribed in circle T. If the perimeter of S is 24, what is the circumference of T ?
来源：破解版07 371人已做 650难度 84.9%正确率
The table above shows the number of residents in each of two age groups who support the use of each type of funding for a city initiative. What is the probability that a person randomly selected from among the 250 residents polled is younger than 40, or supports a type of funding that indudes a tax, or both?
An 〝Armstrong number〞is an n-digit number that is equal to the sum of the nth powers ofits individual digits. For example, 153 is an Armstrong number because it has 3 digits and 13+53+33 =153 .What is the digit k in the Armstrong number 1, 6k 4?
When people evade income taxes by not declaring taxable income, a vicious cycle results. Tax evasion forces lawmakers to raise income tax rates, which causes the tax burden on nonevading taxpayers to become heavier. This, in turn, encourages even more taxpayers to evade income taxes by hiding taxable income. The vicious cycle described above could not result unless which of the following were true?
In the United States, less than half as many multifamily housing units were produced in the 1990s than in each of the previous two decades.
Last year land values in most parts of the pinelands rose almost so fast, and in some parts even faster than what they did outside the pinelands.
【OG20-P787-770题】Unlike the virginal,whose single set of strings runs parallel to the front edge of the instrument, the harpsichord's several sets of strings are placed at right angles to its front edge.
New equipment and other improvements reduced the amount of time—from eleven hours in 1982 to six in 1988—needed by workers so that they could produce a ton of steel.
According to the passage, the periodic behavior displayed by commuter diatoms under constant laboratory conditions is characterized by which of the following?
Because 70 percent of the people of India use wood as their sole fuel, ten million acres of forest have been lost there since 1960, resulting in wood now costing eight times as much to collect and distribute than in 1960.
In a blow to those who still harbored the illusion that E-mail exchanges are private, a watchdog group recently uncovered a trick for enabling an interloper to rig an E-mail message so that this person will be privy to any comments that a recipient had added as the message is forwarded to others or sent back and forth.