The average of 20 numb

Question

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

Options:

A . 0

B . 1

C . 10

D . 19

Answer: Option D

Average of 20 numbers = 0

`:.` Sum of 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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