Thread: Arithmetic Series
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Old May 1st, 2008, 07:05 PM
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Originally Posted by Mathstud29 View Post
This would be a series of the odd numbers so it would be \sum_{i=0}^{n}2i+1

can you find n from that?
\sum_{n=0}^{x}2n+1=\sum_{n=0}^{x}2n+\sum_{n=0}^{x}1=\frac{2x(x+1)}{2}+x

Now solve \frac{2x(x+1)}{2}+x=2500
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