Q1: The average of 20 numbers is zero. Of them, at the most, how many may be greater than zero?
A
10
B
0
C 19
D
1
ANS:D - 19
Average of 20 numbers = 0.
Sum of 20 numbers (0 x 20) = 0.
It is quite possible that 19 of these numbers may be positive and if their sum is a then 20th number is (-a).
Sum of 20 numbers (0 x 20) = 0.
It is quite possible that 19 of these numbers may be positive and if their sum is