AMC factor problems
21 past AMC problems use factor. 10 come from the AMC 10 and 11 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 7
- 2024 AMC 10B · Problem 6
- 2024 AMC 12A · Problem 6
- 2024 AMC 12A · Problem 12
- 2023 AMC 10A · Problem 23
- 2023 AMC 12B · Problem 14
- 2022 AMC 10B · Problem 7
- 2022 AMC 12B · Problem 4
- 2021 AMC 10B · Problem 5
- 2020 AMC 12B · Problem 24
- 2019 AMC 12B · Problem 14
- 2018 AMC 10B · Problem 21
- 2014 AMC 10A · Problem 21
- 2014 AMC 10B · Problem 12
- 2014 AMC 12B · Problem 7
- 2013 AMC 12A · Problem 10
- 2011 AMC 12B · Problem 15
- 2008 AMC 12B · Problem 16
- 2005 AMC 10A · Problem 21
- 2003 AMC 10A · Problem 8
- 2002 AMC 12A · Problem 20
Back to all number theory problems.