Art of Problem Solving
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2000 AMC 10 Problems/Problem 20: Revision history

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22 April 2023

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8 November 2021

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18 October 2018

23 July 2018

25 June 2018

6 May 2018

29 January 2016

18 January 2014

18 August 2013

3 July 2013

11 January 2009

8 January 2009