The William Lowell Putnam Mathematics Competition is a North American math contest for college students. 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.

The material on this page is intended to supplement the MAA's three existing compilations of Putnam exams. These books are:

- The William Lowell Putnam Mathematical Competition. Problems and solutions: 1938-1964, by Gleason, Greenwood and Kelly;
- The William Lowell Putnam mathematical competition. Problems and solutions: 1965-1984, edited by Alexanderson, Klosinski and Larson;
- The William Lowell Putnam Mathematical Competition 1985-2000: Problems, Solutions and Commentary, by Kedlaya, Poonen and Vakil.

All three are currently in print, and should be available for purchase through the MAA web site or other channels.

Problem statements given here are verbatim from the competition (except some diagrams are missing), and are copyrighted by the Mathematical Association of America. They appear here with permission, but further redistribution is subject to copyright restrictions; contact the MAA for assistance.

Solutions given here are compiled based on numerous sources, including the
Art of Problem Solving
discussion forums. Copyright is held by the named authors, who request that you
link to this page in lieu of reproducing these solutions elsewhere. Please
do not refer to these as "official solutions", as this creates confusion
with the true official solutions issued by the MAA reflecting the intent
of the problem setters. Those appear in the official exam summary,
along with results and statistics, in the *American Mathematical
Monthly* sometime in the year following the competition, usually in
October. (One typically also finds solutions in *Mathematics Magazine*
in early spring.)

Until 2016, a printed summary of results was sent by mail (usually in early April) to participating schools along with exam results; the HTML versions below are transcriptions of these. Starting with the 2017 competition, this material was sent electronically in mid-February; both the original summary of results and old-style HTML transcriptions are provided.

For corrections
and other comments about *this material only*, contact Kiran Kedlaya.
I cannot provide individual scores (see your school's Putnam coordinator) or
assist with exam administration (see the MAA's Putnam home page for instructions).

Results from the 2017 competition, held December 2, were posted on February 20. My understanding is that this timing, which is 4-6 weeks earlier than in previous years, is likely to continue in the future.

Year | Problems | Solutions | Winners | Scores | |||
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2017 | TeX | TeX | HTML | HTML | |||

2016 | TeX | TeX | HTML | HTML | |||

2015 | TeX | TeX | HTML | HTML | |||

2014 | TeX | TeX | HTML | HTML | |||

2013 | TeX | TeX | HTML | HTML | |||

2012 | TeX | TeX | HTML | HTML | |||

2011 | TeX | TeX | HTML | HTML | |||

2010 | TeX | TeX | HTML | HTML | |||

2009 | TeX | TeX | HTML | HTML | |||

2008 | TeX | TeX | HTML | HTML | |||

2007 | TeX | TeX | HTML | HTML | |||

2006 | TeX | TeX | HTML | HTML | |||

2005 | TeX | TeX | HTML | HTML | |||

2004 | TeX | TeX | HTML | HTML | |||

2003 | TeX | TeX | HTML | HTML | |||

2002 | TeX | TeX | HTML | HTML | |||

2001 | TeX | TeX | HTML | HTML | |||

2000 | TeX | TeX | HTML | HTML | |||

1999 | TeX | TeX | HTML | HTML | |||

1998 | TeX | TeX | HTML | HTML | |||

1997 | TeX | TeX | HTML | HTML | |||

1996 | TeX | TeX | HTML | HTML | |||

1995 | TeX | TeX | HTML | HTML | |||

1994 | TeX | HTML | HTML | ||||

1993 | TeX | ||||||

1992 | TeX | ||||||

1991 | TeX | ||||||

1990 | TeX | ||||||

1989 | TeX | ||||||

1988 | TeX | ||||||

1987 | TeX | ||||||

1986 | TeX | ||||||

1985 | TeX |