Art of Problem Solving
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2013 AMC 12B Problems/Problem 9: Revision history

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7 August 2023

21 January 2023

17 January 2021

21 December 2020

17 December 2020

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27 January 2019

22 November 2013

29 October 2013

3 July 2013

12 April 2013

22 February 2013