25 Jul 2014
The average of 20 numbers is zero. Of them, at ...
The average of 20 numbers is zero. Of them, at the most, how many may be greater than zero?
0 | |
1 | |
10 | |
19 |
The average of 20 numbers is zero. Of them, at the most, how many may be greater than zero?
0 | |
1 | |
10 | |
19 |