Art of Problem Solving
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2015 AMC 10B Problems/Problem 20: Revision history

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17 August 2023

4 August 2021

29 June 2021

23 June 2021

16 January 2021

21 December 2020

15 September 2020

6 September 2020

13 February 2019

17 August 2017

26 July 2017

22 January 2017

6 April 2015

16 March 2015