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 ## 1. What is 2 + 2?
 
-5
+4
 
 ## 2. What is JavaScript?
 
-An exciting new play about coffee.
+JavaScript is a browser-based programming language that brings interactivity to static web pages, applications and more.
 
 ## 3. What three problems does Git & GitHub solve?
 
-When people want to show off code to each other they can put it on GitHub
+1. Allows multiple developers to work on a single project at the same time;
+2. Stores all commits in a convinient way;
+3. Allows to create experimental branches that do not necessarily need to be added to the project.
 
 ## 4. What happens when you `fork` a repository?
 
-You delete it
+You create a personal, independent copy of it.
 
 ## 5. What happens when you clone a repository?
 
-It send it to a friend
+You create a local copy of it.
 
 ## 6. What is a Pull Request?
 
-When you send a file over the internet
+Request for adding your changes in the project.