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  3. Each of Questions 1 to 7 presents two quantities. Quantity A and Quantity B. Com

Each of Questions 1 to 7 presents two quantities. Quantity A and Quantity B. Com

游客2024-01-12  51
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.
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选项 A、 
B、 
C、 
D、 
答案 B
解析 The correct answer is B. You could solve this by multiplying each quantity and comparing. However, you could also solve by thinking about the quantities in the following way:
14(256)
= 14(255 + 1)
= 14(255)+ 14(1)
= 14(255)+ 14
15(255)
=(14 + 1)(255)
=14(255)+ 1(255)
=14(255)+ 255
Thus it is apparent that Quantity B is greater than Quantity A.
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