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PREP07 Test 2
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In a certain group of 10 members, 4 members teach only French and the rest teach only Spanish or German. If the group is to choose a 3-member committee, which must have at least 1 member who teaches French, how many different committees can be chosen?
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PREP07 Test 2 OG18-文本逻辑 OG19-文本逻辑
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The gyrfalcon, an Arctic bird of prey, has survived a close brush with extinction; its numbers are now five times greater than when the use of DDT was sharply restricted in the early 1970's.
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OG12 OG15 OG16 PREP07 Test 2 OG17 OG18 OG19 OG20 OG2022
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Australian embryologists have found evidence that suggests that the elephant is descended from an aquatic animal, and its trunk originally evolving as a kind of snorkel.
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PREP07 Test 2
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If a certain company purchased computers at $2,000 each and printers at $300 each, how many computers did it purchase? (1) More than three printers were purchased. (2) The total amount for the purchase of the computers and the printers was $15,000.
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PREP07 Test 2
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Last semester an assistant was paid a total of $800 for grading papers in a class of 37 students. If each student handed in 7 papers and the assistant graded all of these papers, then, to the nearest whole dollar, the assistant's pay per paper graded was
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PREP07 Test 2
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If x = 3 and y = 6, is y > nx + k ? (1) n = 5 (2) k = -10
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PREP07 Test 2
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Amy's grade was the 90th percentile of the 80 grades for her class. Of the 100 grades from another class, 19 were higher than Amy's, and the rest were lower. If no other grade was the same as Amy's grade, then Amy's grade was what percentile of the grades of the two classes combined?
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PREP07 Test 2
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The United States will be affected by whether Taiwan develops a closer relationship with mainland China or preserves the status quo, since the island nation is the United States' seventh-largest trading partner.
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PREP07 Test 2
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Does x + c = y + c ? (1) x = y (2) x = c
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PREP07 Test 2
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To determine her state income tax last year, Elena computed 5 percent of her gross income, rounded the resulting figure down to the nearest $100, and subtracted $50 for each dependent that she claimed. If Elena's gross income was $34,500 and she claimed 2 dependents, how much did she determine her state income tax to be?
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PREP07 Test 2
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The global-warming effect of ocean white caps are one of the many aspects of the ocean environment that are not yet incorporated in any detail into the computer models used for predicting how rising greenhouse gas concentrations could affect climate.
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PREP07 Test 2
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The area of a square garden is A square feet and the perimeter is P feet. If A = 2P + 9, what is the perimeter of the garden, in feet?
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PREP07 Test 2
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If n is an integer between 3 and 9, what is the value of n ?(1) On the number line, the distance from 3 to n is 2/3 of the distance from 3 to 9.(2) On the number line, n is 10 units to the right of -3
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PREP07 Test 2
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Hydrocarbons, with which fruit flies perfume themselves in species-specific blends, are known to be important in courtship, and apparently this assists flies that taste the hydrocarbons on prospective mates to distinguish their own species from that of others.
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PREP07 Test 2
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Is the average (arithmetic mean) of 5 different positive integers at least 30 ?(1) Each of the integers is a multiple of 10. (2) The sum of the 5 integers is 160.
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PREP07 Test 2
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Which of the following is closest to $$\sqrt{8^2-4^2}$$
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PREP07 Test 2
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A new study finds that the more hostility people show in their behavior and attitudes, then calcium deposits are more likely to be in the arteries of their hearts.
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PREP07 Test 2
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Square S is inscribed in circle T. If the perimeter of S is 24, what is the circumference of T ?
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PREP07 Test 2
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A certain jar contains only b black marbles, w white marbles, and r red marbles. If one marble is to be chosen at random from the jar, is the probability that the marble chosen will be red greater than the probability that the marble chosen will be white?(1) $${{r}\over{b+w}}>{{w}\over{b+r}}$$(2) b – w > r
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PREP07 Test 2
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On his trip from Alba to Benton, Julio drove the first x miles at an average rate of 50 miles per hour and the remaining distance at an average rate of 60 miles per hour. How long did it take Julio to drive the first x miles?(1) On this trip, Julio drove for a total of 10 hours and drove a total of 530 miles.(2) On this trip, it took Julio 4 more hours to drive the first x miles than to drive the remaining distance.
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