Islam is one of the world’s major religions, and the subject of contemporary debate given the violence some extremist Muslim groups are perpetrating in its name. This quiz tests your knowledge of some of the basic beliefs, practices and geographic distribution of the Muslim faith.

Special thanks to intern Fouzia Hillalzai for helping to draft this quiz.  


1. Islam is the _____ most common religion, measured in numbers of followers.


2. Which nation has the most Muslims in the world?


3. Which of the following is not one of the five pillars of Islam?


4. Which of the following is not correct about Islamic beliefs?


5. True or False: The conflict between Shi’a and Sunni Muslims has its origins in their disagreement over who was the rightful successor to Muhammad.