Multiple choice

The average of 20 numbers is zero. How many of them can be greater than zero? (at max.)

  1. 19

  2. 5

  3. 10

  4. 17

  5. 11
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A Correct answer
Explanation

It means the sum of numbers is zero. So, at least 1 number is less than zero, which is equal to sum of all the numbers. Hence, at maximum, 19 numbers can be greater than 0.

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