Lessons

General Aptitude
7.1 Average - General Questions

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Q.

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

View Answer

Correct choice: D

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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