AMC 10: 2016–2025 papers, answer keys and worked solutions
Collected and checked: 12 October 2026

CONTENTS
22 contest sets: 22 question papers + 22 answer keys + 22 worked-solution PDFs.
Each paper contains 25 questions. Each key contains 25 answers.
A/B sets are separated into folders. 2021 has both Spring (February) and Fall
(November) sittings, each with A and B, for four sets that year.
2016–2025 are the latest ten completed calendar contest years as of collection.
The 2026 AMC 10 contests are scheduled for 5 and 13 November.

HOW TO USE
Choose a year, then A or B. For 2021 choose Spring or Fall first.
Question_Paper: the contest questions.
Answer_Key: the 25 letter answers.
Worked_Solutions_LIVE: step-by-step explanations supplied by the publisher.
Year_ZIPs contains a separate downloadable archive for each year.
The combined ZIP includes all 66 PDFs and documentation, without nested ZIPs.

SOURCE AND COPYRIGHT
Publisher/archive: LIVE by Po-Shen Loh
https://live.poshenloh.com/past-contests
The MAA owns the contest questions. The source archive states that these
printable versions reproduce them with MAA permission. These are readable
retypeset versions, rather than original MAA exam booklets.
Answer-key PDFs and worked solutions are supplied by LIVE. The worked
solutions are third-party explanations, not official MAA solution booklets.
No replacement solutions were authored for this collection. Downloaded PDF
contents are unchanged; only the local filenames and folders were organised.
Source links, page counts, file sizes and SHA-256 hashes are in
 download_manifest.json. Preserve attribution and consult the publisher's
rights and terms before redistribution.

VALIDATION
Verified all 66 PDFs, cover identity and labels, all 25 question numbers in
every paper and solution PDF, all 25 answer-key entries, copied file hashes,
and rendered paper/answer-key pages plus representative solution pages.
All 550 worked solutions have not been independently mathematically re-solved.
See validation_report.json and visual_qa_report.json for exact coverage.

SOURCE LABELS
LIVE uses 2021A/B for Spring A/B and 2021C/D for Fall A/B internally.
Local folders and filenames use the actual contest A/B labels and sitting.

Official MAA competition information:
https://maa.org/student-programs/amc/
