the average of 10 numbers is 0 . in those 10 , at the least , how many may be greater than or equal to zero ?	Choose the correct choice from the following choices:
A) 0 B) 1 C) 2 D) 3 E) 5

Rationale: explanation : average of 10 numbers = 0 sum of 10 numbers = ( 0 x 10 ) = 0 . it is quite possible that 9 of these numbers may be negative and if there sum is - a , then 10 th number is ( a ) . answer : b
Answer: B