Art of Problem Solving
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1987 AIME Problems/Problem 9: Revision history

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11 December 2024

5 February 2024

9 December 2021

4 March 2021

12 May 2020

18 January 2020

4 March 2019

4 July 2013

16 June 2008

3 October 2007

15 February 2007

10 February 2007

29 January 2007

9 July 2006