- #1
rajeshmarndi
- 319
- 0
Homework Statement
I want to have a formula of this kind,
(8+7+...+1) + (7+6+..+1) + (6+5+..+1) + ...1
Homework Equations
The Attempt at a Solution
I know , n+(n-1)+...+1 = n(n+1)/2