Chapter 1: The Role of Algorithms in Computing

@fabioyamate @andrielfn @laurocaetano just finished the answers for chapter 1.

However didn't answer one of the exercises.
![obtuse31](https://cloud.githubusercontent.com/assets/611891/3580165/25a95052-0bcf-11e4-9be0-ffe47b8cb5b8.jpg)