The Putnam Archive

The William Lowell Putnam Mathematics Competition is a North American math contest for college students, organized by the Mathematical Association of America (MAA). Each year on the first Saturday in December, several thousand US and Canadian students spend 6 hours (in two sittings) trying to solve 12 problems. Individual and team winners (and their schools, in the latter case) get some money and a few minutes of fame.

This web site contains problem statements, solutions, and competition results for recent years.

Some additional resources concerning the Putnam competition include the following.

This page is maintained by Kiran Kedlaya; contact me with corrections and other comments about this material only. I cannot assist with exam administration. If you are a student, see your school's Putnam coordinator; if you are a coordinator, see the MAA's Putnam home page for instructions.

The problems and solutions for the 81st competition are now posted. Due to the COVID-19 pandemic, this competition was held in an unofficial mode; individual students and institutions will receive their scores, but no official announcement of results will be made, nor any prizes awarded.

Year Problems Solutions Winners Scores
2020 TeX PDF TeX PDF unofficial; see below
2019 TeX PDF TeX PDF HTML PDF HTML
2018 TeX PDF TeX PDF HTML PDF HTML
2017 TeX PDF TeX PDF HTML PDF HTML
2016 TeX PDF TeX PDF HTML   HTML
2015 TeX PDF TeX PDF HTML   HTML
2014 TeX PDF TeX PDF HTML   HTML
2013 TeX PDF TeX PDF HTML   HTML
2012 TeX PDF TeX PDF HTML   HTML
2011 TeX PDF TeX PDF HTML   HTML
2010 TeX PDF TeX PDF HTML   HTML
2009 TeX PDF TeX PDF HTML   HTML
2008 TeX PDF TeX PDF HTML   HTML
2007 TeX PDF TeX PDF HTML   HTML
2006 TeX PDF TeX PDF HTML   HTML
2005 TeX PDF TeX PDF HTML   HTML
2004 TeX PDF TeX PDF HTML   HTML
2003 TeX PDF TeX PDF HTML   HTML
2002 TeX PDF TeX PDF HTML   HTML
2001 TeX PDF TeX PDF HTML   HTML
2000 TeX PDF TeX PDF HTML   HTML
1999 TeX PDF TeX PDF HTML   HTML
1998 TeX PDF TeX PDF HTML   HTML
1997 TeX PDF TeX PDF HTML   HTML
1996 TeX PDF TeX PDF HTML   HTML
1995 TeX PDF TeX PDF HTML   HTML
1994 TeX PDF   HTML   HTML
1993 TeX PDF      
1992 TeX PDF      
1991 TeX PDF      
1990 TeX PDF      
1989 TeX PDF      
1988 TeX PDF      
1987 TeX PDF      
1986 TeX PDF      
1985 TeX PDF      
The "2020" entry is the 81st competition, postponed to February 20, 2021 due to the COVID-19 pandemic, and held in an unofficial mode with no prizes or official results.