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