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The average (arithmetic mean) and the median of a set of 5 numbers is 0, and the set contains at least one number that is not equal to 0. Which of the following statements must be true?

A.Exactly one of the numbers is not equal to 0.
B.Exactly one of the numbers is negative.
C.Exactly two of the numbers are negative.
D.The set has the same number of positive numbers as negative numbers.
E.The sum of the nonzero numbers in the set is 0.

E显示答案

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· 相关考点

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