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Arithmetic Ability
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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.
1
D.
none of these
View Answer
Correct choice: A
Explanation:
Average of 20 numbers = 0. Sum of 20 numbers = (0 * 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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