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Each of Questions 1 to 7 presents two quantities. Quantity A and Quantity B. Compare the two quantities. You may use additional
Each of Questions 1 to 7 presents two quantities. Quantity A and Quantity B. Compare the two quantities. You may use additional
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2013-05-19
80
问题
Each of Questions 1 to 7 presents two quantities. Quantity A and Quantity B. Compare the two quantities. You may use additional information centered above the quantities if such information is given. Choose one of the following answer choices:
A if Quantity A is greater;
B if Quantity B is greater;
C if the two quantities are equal;
D if you cannot determine the relationship based on the given information.
选项
A、
B、
C、
D、
答案
D
解析
The correct answer is D. To solve this problem, try some test values for r, s, and t. Because it is given in the problem that they are negative numbers, r<0, s<0, and r<0. Let r=-1, s=-2 and f=-4. The sum is -7(-1+-2+-4), but the product is -8(-1x-2x-4), making the product less than the sum. Now, let r=-0.5, s=-l and r=-2. The sum is -3.5(-0.5+-1+-2), but the product is -1(-0.5×-l×-2), making the product greater than the sum. Therefore, you cannot determine the relationship based on the given information.
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