Art of Problem Solving
GET READY FOR THE AMC 12 WITH AoPS
Learn with outstanding instructors and top-scoring students from around the world in our AMC 12 Problem Series online course.
CHECK SCHEDULE

2009 AMC 12A Problems: Revision history

Diff selection: Mark the radio buttons of the revisions to compare and hit enter or the button at the bottom.
Legend: (cur) = difference with latest revision, (prev) = difference with preceding revision, m = minor edit.

7 September 2025

12 August 2020

19 February 2020

7 September 2018

6 February 2017

5 February 2017

3 July 2013

20 August 2012

13 February 2009

12 February 2009

11 February 2009