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 problems are used with official legal permission of the Mathematical Association of America (MAA).

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These problems’ difficulty ratings come from real solve attempts on our platform. Tap a band or a contest to filter the list below, and tap a selected band again to include all difficulties. See the full difficulty guide.

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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

More arithmetic concepts

clockdate and timedecimaldistance rate and timedistributive propertyestimationexponentfractionmoneynumber baseorder of operationspercentageplace valuerateratio and proportionrelative speedrepeating decimalunit conversionwhole number operations