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1. The average of 20 numbers is zero. Of them, at the most, how many may be greater than zero ?
- A. 0
- B. 0
- C. 0
- D. 0
Answer: Option D
Explanation:
Hints : 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 them 20th numbers is ( - a)
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