The average of 20 numbers is zero. Of them, at the most, how many may be greater than zero?	Choose the correct choice from the following options.
A) 0 B) 1 C) 10 D) 19 E) 20
Solution   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 there sum id a, then 20th number is (-a).   0nswer 0
<result>A</result>
The average of 20 numbers is zero. Of them, at the most, how many may be greater than zero?