when average age of 24 members are 0 , how many members greater than 0 ?
"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 24 th number is ( - a ) answer is 23 ( b )"
subtract(24, const_1)