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Mock AIME 1 2006-2007 Problems/Problem 9

Revision as of 10:41, 30 September 2006 by JBL (talk | contribs)

Problem

Revised statement

Let $a_{n}$ be a geometric sequence of complex numbers with $a_{0}=1024$ and $a_{10}=1$, and let $S$ denote the infinite sum $S = a_{10}+a_{11}+a_{12}+...$. If the sum of all possible distinct values of $S$ is $\frac{m}{n}$ where $m$ and $n$ are relatively prime positive integers, compute the sum of the positive prime factors of $n$.

Original statement

Solution

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