The average of 20 numbers is zero. Of them, at the most, how many may be greater than zero?  Answers
A) 0	B) 1	C) 10	D) 19	E) None
EXPLANATION   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).   0nswer 0
<result>A</result>
The average of 20 numbers is zero. Of them, at the most, how many may be greater than zero?