When average age of 24 members are 0, how many members greater than 0?  Choose the correct option:
A) 17  B) 23  C) 21  D) 24  E) 25
Average of 24 numbers = 0.   Sum of 24 numbers (0 x 24) = 0.   It is quite possible that 23 of these numbers may be positive and if their sum is a then 24th number is (-a)   Answer is 23 (23)
<result>B</result>
When average age of 24 members are 0, how many members greater than 0?