Factorial — AMC & AIME Problems
Practice every real AMC 8, AMC 10, AMC 12, and AIME problem that uses factorial — a arithmetic concept — each with a professionally curated solution, many with a video solution too, from LIVE by Po-Shen Loh. Browse all concepts or the full past-contest archive.
All of these problems are used with official legal permission of the Mathematical Association of America (MAA).
AMC 8
2017 AMC 8 Problem 5 · 2017 AMC 8 Problem 19 · 2020 AMC 8 Problem 12 · 2022 AMC 8 Problem 17 · 2026 AMC 8 Problem 24
AMC 10
2004 AMC 10B Problem 6 · 2005 AMC 10A Problem 15 · 2005 AMC 10B Problem 22 · 2006 AMC 10B Problem 11 · 2010 AMC 10A Problem 24 · 2013 AMC 10B Problem 20 · 2014 AMC 10A Problem 8 · 2015 AMC 10B Problem 23 · 2016 AMC 10A Problem 1 · 2018 AMC 10A Problem 3 · 2019 AMC 10A Problem 2 · 2019 AMC 10A Problem 9 · 2019 AMC 10A Problem 25 · 2019 AMC 10B Problem 6 · 2019 AMC 10B Problem 14 · 2022 AMC 10B Problem 9 · 2023 AMC 10B Problem 15 · 2024 AMC 10A Problem 5 · 2024 AMC 10B Problem 2