AMC custom operation problems
28 past AMC problems use custom operation. 20 come from the AMC 10 and 8 from the AMC 12.
Picks a problem you have not seen, at about the difficulty you are handling.
Problems
Newest contests first. Every problem opens with its answer choices, hints and a worked solution.
- 2023 AMC 12B · Problem 12
- 2022 AMC 10B · Problem 1
- 2022 AMC 12B · Problem 1
- 2019 AMC 12A · Problem 23
- 2016 AMC 10A · Problem 23
- 2016 AMC 10B · Problem 2
- 2016 AMC 12A · Problem 3
- 2016 AMC 12A · Problem 20
- 2015 AMC 10B · Problem 7
- 2013 AMC 10B · Problem 14
- 2011 AMC 10A · Problem 3
- 2011 AMC 10B · Problem 15
- 2010 AMC 10A · Problem 6
- 2010 AMC 10B · Problem 4
- 2008 AMC 10B · Problem 5
- 2008 AMC 12B · Problem 7
- 2007 AMC 10A · Problem 2
- 2007 AMC 10B · Problem 2
- 2006 AMC 10A · Problem 2
- 2006 AMC 10B · Problem 2
- 2006 AMC 12A · Problem 2
- 2006 AMC 12B · Problem 2
- 2005 AMC 10A · Problem 2
- 2005 AMC 10B · Problem 4
- 2004 AMC 10A · Problem 2
- 2003 AMC 10A · Problem 6
- 2002 AMC 10A · Problem 2
- 2002 AMC 10B · Problem 2
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