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The average of 20 numbers is zero. Of them, at the most, how many may be greater than zero?

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The average of 20 numbers is zero. Of them, at the most, how many may be greater than zero?
posted Mar 30, 2016 by Vikram Luthra

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1 Answer

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19
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).

answer Mar 31, 2016 by Avantika Agrawal
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