OBMEP Problems and Solutions
Created in 2005 and run by IMPA, the Instituto de Matemática Pura e Aplicada, with funding from Brazil's ministries of education and of science and technology. Despite its name it is open to public and private schools alike, for pupils from the 6th grade to the end of high school, at three levels. A multiple-choice first phase is sat in the schools, and the best go on to a written second phase.
2025
Brazil
Phase 1
1 Level 1 All problems Problem Solution OBMEP 2025 Phase 1 Level 1 problem 1, All problems 2 Level 2 All problems Problem Solution OBMEP 2025 Phase 1 Level 2 problem 2, All problems 3 Level 3 All problems Problem Solution OBMEP 2025 Phase 1 Level 3 problem 3, All problems Phase 2
4 Level 1 All problems Problem Solution OBMEP 2025 Phase 2 Level 1 problem 4, All problems 5 Level 2 All problems Problem Solution OBMEP 2025 Phase 2 Level 2 problem 5, All problems 6 Level 3 All problems Problem Solution OBMEP 2025 Phase 2 Level 3 problem 6, All problems
2024
Brazil
Phase 1
1 Level 1 All problems Problem Solution OBMEP 2024 Phase 1 Level 1 problem 1, All problems 2 Level 2 All problems Problem Solution OBMEP 2024 Phase 1 Level 2 problem 2, All problems 3 Level 3 All problems Problem Solution OBMEP 2024 Phase 1 Level 3 problem 3, All problems Phase 2
4 Level 1 All problems Problem Solution OBMEP 2024 Phase 2 Level 1 problem 4, All problems 5 Level 2 All problems Problem Solution OBMEP 2024 Phase 2 Level 2 problem 5, All problems 6 Level 3 All problems Problem Solution OBMEP 2024 Phase 2 Level 3 problem 6, All problems
2023
Brazil
Phase 1
1 Level 1 All problems Problem Solution OBMEP 2023 Phase 1 Level 1 problem 1, All problems 2 Level 2 All problems Problem Solution OBMEP 2023 Phase 1 Level 2 problem 2, All problems 3 Level 3 All problems Problem Solution OBMEP 2023 Phase 1 Level 3 problem 3, All problems Phase 2
4 Level 1 All problems Problem Solution OBMEP 2023 Phase 2 Level 1 problem 4, All problems 5 Level 2 All problems Problem Solution OBMEP 2023 Phase 2 Level 2 problem 5, All problems 6 Level 3 All problems Problem Solution OBMEP 2023 Phase 2 Level 3 problem 6, All problems
2022
Brazil
Phase 1
1 Level 1 All problems Problem Solution OBMEP 2022 Phase 1 Level 1 problem 1, All problems 2 Level 2 All problems Problem Solution OBMEP 2022 Phase 1 Level 2 problem 2, All problems 3 Level 3 All problems Problem Solution OBMEP 2022 Phase 1 Level 3 problem 3, All problems Phase 2
4 Level 1 All problems Problem Solution OBMEP 2022 Phase 2 Level 1 problem 4, All problems 5 Level 2 All problems Problem Solution OBMEP 2022 Phase 2 Level 2 problem 5, All problems 6 Level 3 All problems Problem Solution OBMEP 2022 Phase 2 Level 3 problem 6, All problems
2021
Brazil
Phase 1
1 Level A All problems Problem Solution OBMEP 2021 Phase 1 Level A problem 1, All problems Phase 2
2 Level 1 All problems Problem Solution OBMEP 2021 Phase 2 Level 1 problem 2, All problems 3 Level 2 All problems Problem Solution OBMEP 2021 Phase 2 Level 2 problem 3, All problems 4 Level 3 All problems Problem Solution OBMEP 2021 Phase 2 Level 3 problem 4, All problems
2019
Brazil
Phase 1
1 Level A All problems Problem Solution OBMEP 2019 Phase 1 Level A problem 1, All problems 2 Level 1 All problems Problem Solution OBMEP 2019 Phase 1 Level 1 problem 2, All problems 3 Level 2 All problems Problem Solution OBMEP 2019 Phase 1 Level 2 problem 3, All problems 4 Level 3 All problems Problem Solution OBMEP 2019 Phase 1 Level 3 problem 4, All problems Phase 2
5 Level 1 All problems Problem Solution OBMEP 2019 Phase 2 Level 1 problem 5, All problems 6 Level 2 All problems Problem Solution OBMEP 2019 Phase 2 Level 2 problem 6, All problems 7 Level 3 All problems Problem Solution OBMEP 2019 Phase 2 Level 3 problem 7, All problems
2018
Brazil
Phase 1
1 Level A All problems Problem Solution OBMEP 2018 Phase 1 Level A problem 1, All problems 2 Level 1 All problems Problem Solution OBMEP 2018 Phase 1 Level 1 problem 2, All problems 3 Level 2 All problems Problem Solution OBMEP 2018 Phase 1 Level 2 problem 3, All problems 4 Level 3 All problems Problem Solution OBMEP 2018 Phase 1 Level 3 problem 4, All problems Phase 2
5 Level 1 All problems Problem Solution OBMEP 2018 Phase 2 Level 1 problem 5, All problems 6 Level 2 All problems Problem Solution OBMEP 2018 Phase 2 Level 2 problem 6, All problems 7 Level 3 All problems Problem Solution OBMEP 2018 Phase 2 Level 3 problem 7, All problems
2017
Brazil
Phase 1
1 Level 1 All problems Problem Solution OBMEP 2017 Phase 1 Level 1 problem 1, All problems 2 Level 2 All problems Problem Solution OBMEP 2017 Phase 1 Level 2 problem 2, All problems 3 Level 3 All problems Problem Solution OBMEP 2017 Phase 1 Level 3 problem 3, All problems Phase 2
4 Level 1 All problems Problem Solution OBMEP 2017 Phase 2 Level 1 problem 4, All problems 5 Level 2 All problems Problem Solution OBMEP 2017 Phase 2 Level 2 problem 5, All problems 6 Level 3 All problems Problem Solution OBMEP 2017 Phase 2 Level 3 problem 6, All problems
2016
Brazil
Phase 1
1 Level 1 All problems Problem Solution OBMEP 2016 Phase 1 Level 1 problem 1, All problems 2 Level 2 All problems Problem Solution OBMEP 2016 Phase 1 Level 2 problem 2, All problems 3 Level 3 All problems Problem Solution OBMEP 2016 Phase 1 Level 3 problem 3, All problems Phase 2
4 Level 1 All problems Problem Solution OBMEP 2016 Phase 2 Level 1 problem 4, All problems 5 Level 2 All problems Problem Solution OBMEP 2016 Phase 2 Level 2 problem 5, All problems 6 Level 3 All problems Problem Solution OBMEP 2016 Phase 2 Level 3 problem 6, All problems
2015
Brazil
Phase 1
1 Level 1 All problems Problem Solution OBMEP 2015 Phase 1 Level 1 problem 1, All problems 2 Level 2 All problems Problem Solution OBMEP 2015 Phase 1 Level 2 problem 2, All problems 3 Level 3 All problems Problem Solution OBMEP 2015 Phase 1 Level 3 problem 3, All problems Phase 2
4 Level 1 All problems Problem Solution OBMEP 2015 Phase 2 Level 1 problem 4, All problems 5 Level 2 All problems Problem Solution OBMEP 2015 Phase 2 Level 2 problem 5, All problems 6 Level 3 All problems Problem Solution OBMEP 2015 Phase 2 Level 3 problem 6, All problems
2014
Brazil
Phase 1
1 Level 1 All problems Problem Solution OBMEP 2014 Phase 1 Level 1 problem 1, All problems 2 Level 2 All problems Problem Solution OBMEP 2014 Phase 1 Level 2 problem 2, All problems 3 Level 3 All problems Problem Solution OBMEP 2014 Phase 1 Level 3 problem 3, All problems Phase 2
4 Level 1 All problems Problem Solution OBMEP 2014 Phase 2 Level 1 problem 4, All problems 5 Level 2 All problems Problem Solution OBMEP 2014 Phase 2 Level 2 problem 5, All problems 6 Level 3 All problems Problem Solution OBMEP 2014 Phase 2 Level 3 problem 6, All problems
2013
Brazil
Phase 1
1 Level 1 All problems Problem Solution OBMEP 2013 Phase 1 Level 1 problem 1, All problems 2 Level 2 All problems Problem Solution OBMEP 2013 Phase 1 Level 2 problem 2, All problems 3 Level 3 All problems Problem Solution OBMEP 2013 Phase 1 Level 3 problem 3, All problems Phase 2
4 Level 1 All problems Problem Solution OBMEP 2013 Phase 2 Level 1 problem 4, All problems 5 Level 2 All problems Problem Solution OBMEP 2013 Phase 2 Level 2 problem 5, All problems 6 Level 3 All problems Problem Solution OBMEP 2013 Phase 2 Level 3 problem 6, All problems
2012
Brazil
Phase 1
1 Level 1 All problems Problem Solution OBMEP 2012 Phase 1 Level 1 problem 1, All problems 2 Level 2 All problems Problem Solution OBMEP 2012 Phase 1 Level 2 problem 2, All problems 3 Level 3 All problems Problem Solution OBMEP 2012 Phase 1 Level 3 problem 3, All problems Phase 2
4 Level 1 All problems Problem Solution OBMEP 2012 Phase 2 Level 1 problem 4, All problems 5 Level 2 All problems Problem Solution OBMEP 2012 Phase 2 Level 2 problem 5, All problems 6 Level 3 All problems Problem Solution OBMEP 2012 Phase 2 Level 3 problem 6, All problems
2011
Brazil
Phase 1
1 Level 1 All problems Problem Solution OBMEP 2011 Phase 1 Level 1 problem 1, All problems 2 Level 2 All problems Problem Solution OBMEP 2011 Phase 1 Level 2 problem 2, All problems 3 Level 3 All problems Problem Solution OBMEP 2011 Phase 1 Level 3 problem 3, All problems Phase 2
4 Level 1 All problems Problem Solution OBMEP 2011 Phase 2 Level 1 problem 4, All problems 5 Level 2 All problems Problem Solution OBMEP 2011 Phase 2 Level 2 problem 5, All problems 6 Level 3 All problems Problem Solution OBMEP 2011 Phase 2 Level 3 problem 6, All problems
2010
Brazil
Phase 1
1 Level 1 All problems Problem Solution OBMEP 2010 Phase 1 Level 1 problem 1, All problems 2 Level 2 All problems Problem Solution OBMEP 2010 Phase 1 Level 2 problem 2, All problems 3 Level 3 All problems Problem Solution OBMEP 2010 Phase 1 Level 3 problem 3, All problems Phase 2
4 Level 1 All problems Problem Solution OBMEP 2010 Phase 2 Level 1 problem 4, All problems 5 Level 2 All problems Problem Solution OBMEP 2010 Phase 2 Level 2 problem 5, All problems 6 Level 3 All problems Problem Solution OBMEP 2010 Phase 2 Level 3 problem 6, All problems
2009
Brazil
Phase 1
1 Level 1 All problems Problem Solution OBMEP 2009 Phase 1 Level 1 problem 1, All problems 2 Level 2 All problems Problem Solution OBMEP 2009 Phase 1 Level 2 problem 2, All problems 3 Level 3 All problems Problem Solution OBMEP 2009 Phase 1 Level 3 problem 3, All problems Phase 2
4 Level 1 All problems Problem Solution OBMEP 2009 Phase 2 Level 1 problem 4, All problems 5 Level 2 All problems Problem Solution OBMEP 2009 Phase 2 Level 2 problem 5, All problems 6 Level 3 All problems Problem Solution OBMEP 2009 Phase 2 Level 3 problem 6, All problems
2008
Brazil
Phase 1
1 Level 1 All problems Problem Solution OBMEP 2008 Phase 1 Level 1 problem 1, All problems 2 Level 2 All problems Problem Solution OBMEP 2008 Phase 1 Level 2 problem 2, All problems 3 Level 3 All problems Problem Solution OBMEP 2008 Phase 1 Level 3 problem 3, All problems Phase 2
4 Level 1 All problems Problem Solution OBMEP 2008 Phase 2 Level 1 problem 4, All problems 5 Level 2 All problems Problem Solution OBMEP 2008 Phase 2 Level 2 problem 5, All problems 6 Level 3 All problems Problem Solution OBMEP 2008 Phase 2 Level 3 problem 6, All problems
2007
Brazil
Phase 1
1 Level 1 All problems Problem Solution OBMEP 2007 Phase 1 Level 1 problem 1, All problems 2 Level 2 All problems Problem Solution OBMEP 2007 Phase 1 Level 2 problem 2, All problems 3 Level 3 All problems Problem Solution OBMEP 2007 Phase 1 Level 3 problem 3, All problems Phase 2
4 Level 1 All problems Problem Solution OBMEP 2007 Phase 2 Level 1 problem 4, All problems 5 Level 2 All problems Problem Solution OBMEP 2007 Phase 2 Level 2 problem 5, All problems 6 Level 3 All problems Problem Solution OBMEP 2007 Phase 2 Level 3 problem 6, All problems
2006
Brazil
Phase 1
1 Level 1 All problems Problem Solution OBMEP 2006 Phase 1 Level 1 problem 1, All problems 2 Level 2 All problems Problem Solution OBMEP 2006 Phase 1 Level 2 problem 2, All problems 3 Level 3 All problems Problem Solution OBMEP 2006 Phase 1 Level 3 problem 3, All problems Phase 2
4 Level 1 All problems Problem Solution OBMEP 2006 Phase 2 Level 1 problem 4, All problems 5 Level 2 All problems Problem Solution OBMEP 2006 Phase 2 Level 2 problem 5, All problems 6 Level 3 All problems Problem Solution OBMEP 2006 Phase 2 Level 3 problem 6, All problems
2005
Brazil
Phase 1
1 Level 1 All problems Problem Solution OBMEP 2005 Phase 1 Level 1 problem 1, All problems 2 Level 2 All problems Problem Solution OBMEP 2005 Phase 1 Level 2 problem 2, All problems Level 3 1 problem All problems Problem 3 Level 3 All problems Problem OBMEP 2005 Phase 1 Level 3 problem 3, All problems Phase 2
4 Level 1 All problems Problem Solution OBMEP 2005 Phase 2 Level 1 problem 4, All problems 5 Level 2 All problems Problem Solution OBMEP 2005 Phase 2 Level 2 problem 5, All problems 6 Level 3 All problems Problem Solution OBMEP 2005 Phase 2 Level 3 problem 6, All problems
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Files collected from OBMEP Website . Papers are in Portuguese. There was no 2020 edition, and for 2021 only the second phase is published. Nível A (4th and 5th grades) is included for 2018, 2019 and 2021; the Olimpíada Mirim that replaced it is not. From 2024 the first phase came in five shuffled versions per level, and version 1 is kept. The solutions to the 2005 first-phase level 3 paper are no longer online.
Developed by Lucas Takayasu · contato@olimpicos.net Discord
