1 July 2025

• curprev 13:5813:58, 1 July 2025 Sevenoptimus talk contribs m 973 bytes −667 Improved formatting of problem statement

19 January 2021

• curprev 12:5612:56, 19 January 2021 Anmol04 talk contribs m 1,640 bytes 0 moved answer choices after diagram

17 July 2017

• curprev 16:3916:39, 17 July 2017 Happia talk contribs m 1,640 bytes +113 more clear

17 June 2016

• curprev 16:5816:58, 17 June 2016 Hiabc talk contribs 1,527 bytes +689 →Problem

3 July 2013

• curprev 20:2020:20, 3 July 2013 Nathan wailes talk contribs 838 bytes +15 →See also

7 April 2013

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15 April 2008

• curprev 10:1910:19, 15 April 2008 1=2 talk contribs 789 bytes +62 No edit summary

23 September 2007

• curprev 16:4316:43, 23 September 2007 Azjps talk contribs 727 bytes +727 Image needed