Below are past exams with the answer for each question. Have fun!
| 2016 Contest | 2016 answers |
| 2015 Contest | 2015 answers |
| 2014 Contest | 2014 answers |
| 2013 Contest | 2013 answers |
| 2011 contest | 2011 answers |
| 2010 contest | |
| 2009 contest | |
| 2008 contest | |
| 2007 contest | 2007 answers *Question 13 was thrown out |
