Instructions 20Q Game: These are similar to full games, but for quizzes larger than 20 questions it will randomly select 20 questions from within the set. This is a quick way to get in some studying of a topic.     
What act topped the charts with "I Gotta Feeling" in 2009?
Carrie Underwood
Chris Brown featuring T-Pain
Nelly Furtado featuring Timbaland
The Black Eyed Peas