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Magoosh
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A box contains 4 red chips and 2 blue chips. If two chips are selected at random without replacement, what is the probability that the chips are different colors?
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Magoosh
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The state of California contains 58 counties, of which some of them have a population less than 10,000.
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Magoosh
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In the middle of the 19th century, mathematician turned computer scientist Ada Lovelace aided Charles Babbage by developing the first computer algorithm, a breakthrough that ushered in the computer age, leading to machines capable of executing functions far more rapidly than could any possible human and resulting in every subsequent development in the field, from the development of the very first personal computer nearly a century later to the programs that today sequence genomes.
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Magoosh
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Proponents of the school of thought positing that the Americas were peopled more than 15,000 years ago by a group forced to traverse thousands of miles of ice fields have themselves had to overcome obstacles in trying to account for such an improbable journey, yet those who argue that such a trek was indeed impossible and thus the first peopling of the Americas happened much later have had to account for the presence of artifacts in southern Chile that indicate that the New World was inhabited over 15,000 years ago.
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Magoosh
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$$(3x10^{20})(8x10^{30})$$=
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Magoosh
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The ability of neuroscientists to pinpoint the exact locations in the brain where complex sensory responses to a variety of stimuli occur, such as a logic-based board game or a series of violent images, have become ever more precise.
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Magoosh
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Which of the following best represents the quotient$$\frac{ P}{Q}$$?
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Magoosh
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Bottom trawling is a type of deep-sea fishing that involves dragging a large net along the bottom of the ocean, and it results in catching and killing many unintended species, some of which are endangered. Environmental advocates, concerned for these endangered marine species, have recommended that commercial fishers use a new set of nets, each designed specifically for the size and shape and pheromones (chemical attractors) of an individual marine species targeted by the commercial fishers. Environmentalists hope use of these new nets will protect the endangered marine species without interrupting commercial deep-sea fishing. Which of the following, if true, most strongly supports the claim that the use of the new nets will have the intended effects?
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Magoosh
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If $$x + 2 ={{x+11}\over{x+3}} , then x^{2} + 4x - 5 =$$
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Magoosh
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If $$ x \neq -2$$, $$x \neq 7$$ and$${{x-3}\over{x+2}}={{x+3}\over{x-7} }$$ , then x =
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Magoosh
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When Q is divided by W, the quotient is R and the remainder is E. Which of the following expressions is equal to E?
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Magoosh
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If the average (arithmetic mean) of b and c is 5, and the average of c and d is 10, then b - d =
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Magoosh
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President of the Smalltown Chamber of Commerce: In the past decade, the businesses in Smalltown have reported average profits of 15% above inflation. The mayor of Smalltown has explained this by citing decreased crime and a growing population, but he is incorrect. In reality, this increase in profitability is not due to these factors, but rather to the sharing of business acumen and market research that occurs at the monthly Chamber of Commerce meetings.Which of the following, if true, best supports the President of the Smalltown Chamber of Commerce's attribution of the increased profits to her organization's meetings?
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Magoosh
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If four numbers are randomly selected without replacement from set {1, 2, 3, 4}, what is the probability that the four numbers are selected in ascending order?
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Magoosh
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Seven years ago Bob was k times as old as Ann. If Ann is now 11 years old, what is Bob's present age in terms of k?
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Magoosh
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Riders who wear bicycle helmets can greatly reduce the risk of significant injury. Therefore, doctors working in an emergency room can expect that, out of cyclists admitted to hospitals, those wearing bicycle helmets will have injuries that are less severe than will those not wearing a helmet.Which of the following is necessary to evaluate the argument?
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Magoosh
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Hoping to increase his company's market share, the CEO of QuikFashion has decided to hold a month-long sale in which all of the clothing in QuikFashion's stores will be discounted by at least 50 percent. Although this discount will mean that the company is selling clothing at cost, the CEO hopes that this broadly advertised sale will attract repeat buyers to QuikFashion, who will return to buy clothing at full price after the month of sales.In assessing the CEO's ability to achieve his goals with this plan, it would be most useful to know which of the following?
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Magoosh
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The Fieldpark nuclear power plant, cited three years ago by a governmentally led safety commission for exceeding safe levels of radiation, has recently allowed the media access to its facilities. A spokesperson for the plant has claimed that the media has full access to the plant and is not prohibited from taking pictures on the premises. The spokesperson promises that, as a result, the citizens of Fieldpark can rest assured that, until next year's governmental inspection, the facility will not exceed the federal regulations on the amount of sieverts, or radiation, to which a person can be exposed. Which of the following is an assumption upon which the spokesperson's conclusion depends?
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Magoosh
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The lobbyist accused of offering a large cash bribe to the senator defended himself: "When I left the house that day, I was carrying no money with me, so I could not possibly have had anything to offer to the senator. Moreover, immediately before I met with the senator, I spent all my cash on lunch with a colleague at an upscale restaurant, which also explains why I was not in a position to offer the senator a bribe."This argument is most vulnerable to what criticism?
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Magoosh
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Jack has 5 cats and 1 dog. If the dog's weight is 3 times the average (arithmetic mean) weight of the cats, then the dog's weight is what fraction of the total weight of all 6 animals?
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