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Q: The average of 20 numbers is zero. Of them, at the most, how many may be greater than zero?
A. 0 B. 1
C. 10 D. 19

Answer and Explanation

Answer:19

Explanation:
Average of 20 numbers = 0.
Sum of 20 numbers (0 x 20) = 0.
It is quite possible that 19 of these numbers may be positive and if their sum is a then 20th number is (-a).

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