Compare Quantity A and Quantity B, using additional information centered above t

游客2024-01-12  8

问题 Compare Quantity A and Quantity B, using additional information centered above the two quantities if such information is given, and select one of the following four answer choices:
(A)Quantity A is greater.
(B)Quantity B is greater.
(C)The two quantities are equal.
(D)The relationship cannot be determined from the information given.
A symbol that appears more than once in a question has the same meaning throughout the question. [br]

选项

答案 C

解析 Quantity A is 1+2 + 3 + 4 + 5 + 6 + 7, or 28. The median of the first 7 positive integers is the middle number when they are listed in order from least to greatest, which is 4. So Quantity B is(7)(4), or 28. Thus the correct answer is Choice C.
This explanation uses the following strategy.
Strategy 8: Search for a Mathematical Relationship
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