The average of 20 numbers is zero. Of them, at the most, how many may be greater than zero ?
Solution
Correct Answer: Option A
Average of 20 numbers = 0.
Sum of 20 numbers = (0 \(\times\) 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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