PSAT Math Multiple-Choice Question 581: Answer and Explanation
Question: 581
For the real integers x and y, what must equal?
- A. The mode of x and y
- B. x2 + y2
- C. The arithmetic mean of x and y
- D. The median of 2x and 2y
Correct Answer: C
Explanation:
(C) , which is the arithmetic mean (simple average) of x and y.
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