7 August 2025

• curprev 13:3313:33, 7 August 2025 Bellaz2014 talk contribs m 5,319 bytes −12 →See also

4 August 2025

• curprev 15:2815:28, 4 August 2025 Lily2030 talk contribs m 5,331 bytes +88 →Video Solution

3 December 2023

• curprev 13:3913:39, 3 December 2023 Supermathking talk contribs 5,243 bytes +77 →Solutions

1 September 2022

• curprev 19:4519:45, 1 September 2022 Yeetdayeet talk contribs m 5,166 bytes +12 made sentence more clear

2 June 2021

• curprev 20:5620:56, 2 June 2021 Mobius247 talk contribs 5,154 bytes 0 →Solution 4
• curprev 20:5620:56, 2 June 2021 Mobius247 talk contribs 5,154 bytes +22 →Solution 3
• curprev 20:5520:55, 2 June 2021 Mobius247 talk contribs 5,132 bytes −702 →Solution 3
• curprev 20:4820:48, 2 June 2021 Mobius247 talk contribs 5,834 bytes +483 →Solution 3
• curprev 20:4520:45, 2 June 2021 Mobius247 talk contribs 5,351 bytes +21 →Solution 4
• curprev 19:4019:40, 2 June 2021 Mobius247 talk contribs 5,330 bytes +33 →Solution 4
• curprev 19:2419:24, 2 June 2021 Mobius247 talk contribs 5,297 bytes +20 →Solution 4
• curprev 19:0519:05, 2 June 2021 Mobius247 talk contribs m 5,277 bytes +10 →Solution 2
• curprev 19:0519:05, 2 June 2021 Mobius247 talk contribs m 5,267 bytes +112 →Solution 2
• curprev 16:3916:39, 2 June 2021 Mobius247 talk contribs m 5,155 bytes −1 →Solution 3
• curprev 16:3816:38, 2 June 2021 Mobius247 talk contribs m 5,156 bytes +2 →Solution 2
• curprev 16:3516:35, 2 June 2021 Mobius247 talk contribs m 5,154 bytes +2 →Solution 1
• curprev 14:3914:39, 2 June 2021 Mobius247 talk contribs 5,152 bytes +1 →Solution 2

17 December 2019

• curprev 22:0022:00, 17 December 2019 Rayfish talk contribs m 5,151 bytes +2 No edit summary

22 October 2019

• curprev 18:1118:11, 22 October 2019 LauraZed talk contribs m 5,149 bytes −3 Reverted edits by Snorelaxrules (talk) to last revision by Liu4505 Tag: Rollback

26 July 2019

• curprev 15:2515:25, 26 July 2019 Snorelaxrules talk contribs m 5,152 bytes 0 →Solution 3
• curprev 15:2515:25, 26 July 2019 Snorelaxrules talk contribs 5,152 bytes +3 →Solution 4

3 February 2019

• curprev 23:5823:58, 3 February 2019 Liu4505 talk contribs 5,149 bytes +9 →Solution 4
• curprev 23:5823:58, 3 February 2019 Liu4505 talk contribs 5,140 bytes +27 →Solution 4
• curprev 23:5723:57, 3 February 2019 Liu4505 talk contribs 5,113 bytes +271 →Solution 4
• curprev 23:5523:55, 3 February 2019 Liu4505 talk contribs 4,842 bytes +18 →Solution 3

15 January 2018

• curprev 14:5814:58, 15 January 2018 Wning123 talk contribs m 4,824 bytes +1 →Solution 2
• curprev 14:5714:57, 15 January 2018 Wning123 talk contribs m 4,823 bytes +59 →Solution 2

3 January 2015

• curprev 16:4016:40, 3 January 2015 Aminusisfail talk contribs 4,764 bytes +1,150 No edit summary

6 October 2014

• curprev 20:5820:58, 6 October 2014 Timneh talk contribs m 3,614 bytes +47 Undo revision 64498 by Timneh (talk)
• curprev 20:5620:56, 6 October 2014 Timneh talk contribs m 3,567 bytes −47 →See also

1 January 2014

• curprev 17:4517:45, 1 January 2014 RS7 talk contribs 3,614 bytes +1 →Solution
• curprev 17:4517:45, 1 January 2014 RS7 talk contribs 3,613 bytes +941 →Solution
• curprev 17:4417:44, 1 January 2014 RS7 talk contribs 2,672 bytes −921 →Solution 2
• curprev 17:4317:43, 1 January 2014 RS7 talk contribs 3,593 bytes +25 →Solution 2
• curprev 17:4117:41, 1 January 2014 RS7 talk contribs 3,568 bytes +3 →Solution 2
• curprev 17:4017:40, 1 January 2014 RS7 talk contribs 3,565 bytes +13 →Solution 2
• curprev 17:4017:40, 1 January 2014 RS7 talk contribs 3,552 bytes +13 →Solution 2
• curprev 17:4017:40, 1 January 2014 RS7 talk contribs 3,539 bytes −1 →Solution 2
• curprev 17:3917:39, 1 January 2014 RS7 talk contribs 3,540 bytes +12 →Solution 2
• curprev 17:3917:39, 1 January 2014 RS7 talk contribs 3,528 bytes −1 →Solution 2
• curprev 17:3817:38, 1 January 2014 RS7 talk contribs 3,529 bytes +857 →Solution

4 July 2013

• curprev 11:1811:18, 4 July 2013 Nathan wailes talk contribs 2,672 bytes +15 No edit summary

16 February 2013

• curprev 18:4418:44, 16 February 2013 Jayjayliu talk contribs 2,657 bytes +47 →See also

20 October 2012

• curprev 21:0121:01, 20 October 2012 Baijiangchen talk contribs 2,610 bytes −431 →Solution

23 January 2012

• curprev 12:4212:42, 23 January 2012 Minsoens talk contribs 3,041 bytes −492 →Solution

10 May 2011

• curprev 19:5019:50, 10 May 2011 Kacheep talk contribs m 3,533 bytes −25 →See Also

23 February 2011

• curprev 00:1700:17, 23 February 2011 Fibonacci97 talk contribs 3,558 bytes +431 →Solution: Simpler solution for problem 25

3 August 2006

• curprev 20:3820:38, 3 August 2006 Xantos C. Guin talk contribs m 3,127 bytes +50 added category

2 August 2006

• curprev 14:0614:06, 2 August 2006 Xantos C. Guin talk contribs m 3,077 bytes +56 added link to previous problem

18 July 2006

• curprev 22:4822:48, 18 July 2006 Xantos C. Guin talk contribs 3,021 bytes +2,951 Added problem and solution