Lehigh math contests, 1999-2013

Here are the problems and solutions of the Lehigh University High School math contest for the years 1999-2013. The 40 questions in the contest must be answered in 2 hours without using a calculator.

2014 exam and solutions, annotated with number of top 49 people answering them correctly.

2013 exam and solutions, annotated with number of top 72 people answering them correctly.

2012 exam and solutions, annotated with the number of people answering them correctly.

2011 exam and solutions, annotated with number of top 46 people answering them correctly.

2010 exam and solutions, annotated with number of top 54 people answering them correctly.

2009 exam and solutions, annotated with number of people answering them correctly.

2008 exam and solutions, annotated with number of people answering them correctly.

2007 exam and solutions.

2006 exam and solutions.

2005 exam and solutions.

2004 exam and solutions.(Two problems talk about shaded regions which are not shaded on the screen. In number 32, there is a sort of cross-shaped figure which should be shaded, while on number 40, the small interior triangle should be shaded.)

2003 exam and solutions.

2002 exam and solutions.

2001 exam and solutions.

2000 exam and solutions.

1999 exam and solutions.

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