1997 PMWC Problems/Problem T2
Problem
Evaluate
Solution
We can group them:
The sum of the first n odd numbers is n^2, so we can replace a lot of that stuff:
That's just .
See Also
1997 PMWC (Problems) | ||
Preceded by Problem T1 |
Followed by Problem T3 | |
I: 1 • 2 • 3 • 4 • 5 • 6 • 7 • 8 • 9 • 10 • 11 • 12 • 13 • 14 • 15 T: 1 • 2 • 3 • 4 • 5 • 6 • 7 • 8 • 9 • 10 |