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## Homework Statement

Using the definition of convergence to prove that the sequence {2^(-n)} converges

## Homework Equations

## The Attempt at a Solution

So, I just don't think I am thinking straight or something. Here is what I got so far:

Chose e>0. Let N be any positive integer greater than ______.

How do I chose the N? Do I need to compare 2^(-n) to something larger to be able to find an N? Any help would be much appreciated. Thanks!