he average of 15 numbers is zero. Of them, at the most, how many may be greater than zero?	Choose the correct option
A) 0  B) 1  C) 14  D) 19  E) 8
Average of 15 numbers = 0.   Sum of 15 numbers (0 x 15) = 0.   It is quite possible that 14 of these numbers may be positive and if their sum is a the 15th number is (-a).   Answer: Option 14
<result>C</result>
he average of 15 numbers is zero. Of them, at the most, how many may be greater than zero?