Give a quick stream of consciousness before answering the following question. The average of 20 numbers is zero. Of them, at the most, how many may be greater than zero?\nOptions:\n(A) 17\n(B) 16\n(C) 17\n(D) 19\n(E) 62
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Average of 20 numbers = 0\nSum of 20 numbers = (0 * 20) = 0\nIt is quite possible that 19 of these numbers may be positive and if their sum is a, then 20th number is (-a).
The answer: (D).
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