n^2.
Easy One!
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n^2
On Thu, Jun 16, 2011 at 12:41 PM, Lavesh Rawat wrote:
> *Number Trick Riddle - 16 june * *
> * * ***
> **
> *Sonal asked the class to see if they could find the sum of the first 50
> odd numbers. As everyone settled down to their addition, Lavesh ran to her
> and said, 'The sum is 2,500.' Ms
