AMC invariant problems
16 past AMC problems use invariant. 6 come from the AMC 10 and 10 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.
- 2024 AMC 10A · Problem 6
- 2024 AMC 10B · Problem 16
- 2021 AMC 12B · Problem 22
- 2019 AMC 12B · Problem 19
- 2016 AMC 10A · Problem 13
- 2016 AMC 12A · Problem 10
- 2015 AMC 12A · Problem 13
- 2013 AMC 10B · Problem 17
- 2013 AMC 12A · Problem 6
- 2013 AMC 12B · Problem 10
- 2013 AMC 12B · Problem 16
- 2013 AMC 12B · Problem 18
- 2007 AMC 12B · Problem 10
- 2004 AMC 12A · Problem 7
- 2003 AMC 10B · Problem 15
- 2000 AMC 10 · Problem 17