## Problem of the Day #35: No Calculators Please
*April 23, 2011*

*Posted by Seungln in : potd , trackback*

**Albert is trying to solve a problem using only his head, a pencil or a pen, and some paper.** Help him find the last 3 digits of $$\large 3^{999999} + 3^{999998} + \cdots + 3^1 + 1$$.

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