You can put this solution on YOUR website! 1+3+5+7+9+11+13+15+17+19 =100cancel 5 number get50
---------
It's a sum of odd numbers.
There are 10 of them --> an even sum.
Deleting 5 leaves 5, an odd number.
The sum of any 5 odd numbers is an odd number.
50 is not possible.
----------
Stated a different way:
Pick 5 of the numbers that add to 50.
Not possible.
