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OG15 OG16 OG17 The following appeared in a letter to prospective students from the admissions office at Plateau College:"Every person who earned an advanced degree in science or engineering from Olympus University last year received numerous offers of excellent jobs. Typically, many graduates of Plateau College have gone on to pursue advanced degrees at Olympus. Therefore, enrolling as an undergraduate at Plateau College is a wise choice for students who wish to ensure success in their careers."Discuss how well reasoned you find this argument. In your discussion be sure to analyze the line of reasoning and the use of evidence in the argument. For example, you may need to consider what questionable assumptions underlie the thinking and what alternative explanations or counterexamples might weaken the conclusion. You can also discuss what sort of evidence would strengthen or refute the argument, what changes in the argument would make it more logically sound, and what, if anything, would help you better evaluate its conclusion.
OG17 OG18 Miguel's online banking password is nine characters long and includes at least one character of each of five types: digits, punctuation marks, uppercase (capital) letters, lowercase (noncapital) letters, and certain other characters. The password begins or ends with one of these other characters, of which it contains exactly one. No consecutive characters in the password are of the same one of these types. (For example, no capital letter is preceded or followed by another capital letter.) The password contains more lowercase letters than characters of any one of the other four types. It also contains fewer punctuation marks than digits, lowercase letters, or uppercase letters. The first three characters of the password are M, ?, and G.In the table, select a type of character that the fifth character in the password must be and a type of character that the seventh character must be. Make only two selections, one in each column.
OG15 OG16 OG17 The following appeared in the editorial section of a local newspaper:"In order to avoid the serious health threats associated with many landfills, our municipality should build a plant for burning trash. An incinerator could offer economic as well as ecological advantages over the typical old-fashioned type of landfill: incinerators can be adapted to generate moderate amounts of electricity, and ash residue from some types of trash can be used to condition garden soil."Discuss how well reasoned you find this argument. In your discussion be sure to analyze the line of reasoning and the use of evidence in the argument. For example, you may need to consider what questionable assumptions underlie the thinking and what alternative explanations or counterexamples might weaken the conclusion. You can also discuss what sort of evidence would strengthen or refute the argument, what changes in the argument would make it more logically sound, and what, if anything, would help you better evaluate its conclusion.
OG15 OG16 OG17 The following appeared in a memorandum from the ElectroWares company's marketing department:"Since our company started manufacturing and marketing a deluxe light bulb six months ago, sales of our economy light bulb—and company profits—have decreased significantly. Although the deluxe light bulb sells for 50 percent more than the economy bulb, it lasts twice as long. Therefore, to increase repeat sales and maximize profits, we should discontinue the deluxe light bulb."Discuss how well reasoned you find this argument. In your discussion be sure to analyze the line of reasoning and the use of evidence in the argument. For example, you may need to consider what questionable assumptions underlie the thinking and what alternative explanations or counterexamples might weaken the conclusion. You can also discuss what sort of evidence would strengthen or refute the argument, what changes in the argument would make it more logically sound, and what, if anything, would help you better evaluate its conclusion.
Ready4

Bovine spongiform encephalopathy (BSE) is a disease in cattle that can spread to humans through the consumption of beef. A government ministry plans to reassure consumers of beef that sufficient controls are in place at farms to render nonexistent the risk of contracting BSE from beef. Prohibitions against cattle eating other cattle brain tissue and regulations on the treatment of cattle waste have been put in place and dramatically reduced BSE cases. But diagnosis of BSE is difficult: it has an incubation period of months to years, during which there are no symptoms. At present, there is virtually no way to detect BSE reliably except by examining post-mortem brain tissue. And beef is known to be produced and sold from cattle that have not undergone testing.

Which of the following, if performed by the government ministry, could logically be expected to overcome the problem with their plan to reassure consumers of beef?
Magoosh GMAT、gmat题库、gmat模考、gmat考满分The above 11 x 11 grid of dots is evenly spaced: each dot is separated by one unit, vertically or horizontally, from its nearest neighbors. Drawn in the diagram is a single right triangle with legs of length 2 & 1. How many right triangles, of this particular size and shape, in any orientation, can be formed by three dots from this grid?
OG18-数学分册 GMAT、gmat题库、gmat模考、gmat考满分 In the figure above, $$\overline{AB}$$, which has length z cm, is tangent to the circle at point A , and $$\overline{BD}$$, which has length y cm, intersects the circle at point C. If BC = x cm and $$z = \sqrt{xy}$$, what is the value of x?(1) CD = x cm(2) $$z = 5\sqrt{2}$$
GWD A theory is either true or false. Galileo's observations of Jupiter's satellites showed that the Ptolemaic theory of the motion of celestial bodies is false. Therefore, since the Copernican theory of planetary motion is inconsistent with the Ptolemaic account, Galileo's observations of Jupiter's satellites proved the truth of the Copernican theory.The argument above is open to the objection that it makes the questionable assumption that
OG12 What is the maximum number of rectangular blocks, each with dimensions 12 centimeters by 6 centimeters by 4 centimeters, that will fit inside rectangular Box X ?(1)When Box X is filled with the blocks and rests on a certain side, there are 25 blocks in the bottom layer.(2)The inside dimensions of Box X are 60 centimeters by 30 centimeters by 20 centimeters.
OG12 OG15 Paula and Sandy were among those people who sold raffle tickets to raise money for Club X. If Paula and Sandy sold a total of 100 of the tickets, how many of the tickets did Paula sell?(1)Sandy sold $$\frac2 3$$ as many of the raffle tickets as Paula did.(2)Sandy sold 8 percent of all the raffle tickets sold for Club X.
PREP07 Test 1 Of the 800 students at a certain college, 250 students live on campus and are more than 20 years old. How many of the 800 students live on campus and are 20 years old or less?(1) 640 students at the college are more than 20 years old.(2) 60 students at the college are 20 years old or less and live off campus.
OG17 OG18 OG19 OG20 OG2022 In each of the last five years, Company K donated p percent of its annual profits to a certain scholarship fund. Did Company K donate more than $10,000 to the scholarship fund last year?(1) Two years ago, Company K had annual profits of $3 million and donated $15,000 to the scholarship fund.(2) Last year, Company K had annual profits of $2.5 million.
Magoosh Suppose n children are going to sit, in any order, on a row of n chairs. What is the value of n?Statement #1: If one child leaves, and one chair is removed from the row, there would be 4320 fewer arrangements of the remaining children.Statement #2: In this row, there are 5040 possible arrangements of the n children.
Manhattan Disposable diapers, while a convenience, are an environmental disaster. If people would use cloth diapers instead of those made of disposable paper, much less paper would be produced saving millions of trees each year. Therefore, people should go back to buying, washing and reusing cloth diapers and Earth's precious natural resources would not be consumed so rapidly.This argument depends of which of the following assumptions?
Magoosh The ratio of males to females in a particular school is 4:5. How many male students are there? Statement #1: If the number of girls increased by 20%, then males would constitute 40% of this larger student body.Statement #2: If 10 more male students joined the school, the new ratio of males to females would be 9:10.
190124 还原机经选题: 文字题&几何 There is a cone container that contains some water (as shown in the figure). H = 4R. The water flows out at the speed of q. How long does all of the water flow out? 1: The distance between water surface and cone vertex is h. 2: The radius of the water surface is r.
Diamonds are almost impossible to detect directly because they are so rare: very rich kimberlitepipes, the routes through which diamonds rise, may contain only three carats of diamonds per ton of kimberlite. Kimberlite begins as magma in Earth's mantle (the layer between the crust and the core). As the magma smashes through layers of rock, it rips out debris, creating a mix of liquid and solid material. Some of the solid material it brings up may come from a so-called diamond-stability field, where conditions of pressure and temperature are conducive to the formation of diamonds. If diamonds are to survive, though, they must shoot toward Earth's surface quickly. Otherwise, they revert to graphite or burn. Explorers seeking diamonds look for specks of "indicator minerals" peculiar to the mantle but carried up in greater quantities than diamonds and eroded out of kimberlite pipes into the surrounding land. The standard ones are garnets, chromites, and ilmenites. One can spend years searching for indicators and tracing them back to the pipes that are their source; however, 90 percent of kimberlite pipes found this way are barren of diamonds, and the rest are usually too sparse to mine.In the 1970's the process of locating profitable pipes was refined by focusing on the subtle differences between the chemical signatures of indicator minerals found in diamond-rich pipes as opposed to those found in barren pipes. For example, G10 garnets, a type of garnet typically found in diamond-rich pipes, are lower in calcium and higher in chrome than garnets from barren pipes. Geochemists John Gurney showed that garnets with this composition were formed only in the diamond-stability field; more commonly found versions came from elsewhere in the mantle. Gurney also found that though ilmenites did not form in the diamond-stability field, there was a link useful for prospectors: when the iron in ilmenite was highly oxidized, its source pipe rarely contained any diamonds. He reasoned that iron took on more or less oxygen in response to conditions in the kimberlitic magma itself-mainly in response to heat and the available oxygen. When iron became highly oxidized, so did diamonds; that is, they vaporized into carbon dioxide.
The performance of the latest generation of ground-based telescopes exceeds that of existing orbiting observatories. Since ground-based telescopes are also cheaper to build than ones that must be launched into space, scientists should end their plans to develop new orbiting observatories.Which of the following is most like the argument above in structure?
Theater M has 25 rows with 27 seats in each row. How many of the seats were occupied during a certain show?(1)During the show, there was an average (arithmetic mean) of 10 unoccupied seats per row for the front 20 rows.(2)During the show, there was an average (arithmetic mean) of 20 unoccupied seats per row for the back 15 rows.
OG12 GMAT、gmat题库、gmat模考、gmat考满分The figure above shows the number of meters in the lengths of the four sides of a jogging path. What is the total distance around the path?(1)One of the sides of the path is 120 meters long.(2)One of the sides of the path is twice as long as each of the two shortest sides.