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





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  • By: guest on 01 Jun 2017 05.44 pm
    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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