19 August 2025

• curprev 19:4819:48, 19 August 2025 Unhappyfarmer talk contribs m 5,370 bytes +39 →Solution 4 (Casework)
• curprev 19:4819:48, 19 August 2025 Unhappyfarmer talk contribs 5,331 bytes −7 →Solution 4 (Low-IQ Casework)
• curprev 19:4719:47, 19 August 2025 Unhappyfarmer talk contribs 5,338 bytes +1,044 →Solution 3 (PIE and Complementary Counting)

20 July 2023

• curprev 19:5719:57, 20 July 2023 Magnetoninja talk contribs 4,294 bytes −26 →Solution 3 (PIE and Complementary Counting)
• curprev 19:5719:57, 20 July 2023 Magnetoninja talk contribs 4,320 bytes −26 →Solution 3 (PIE and Complementary Counting)
• curprev 19:5719:57, 20 July 2023 Magnetoninja talk contribs 4,346 bytes −26 →Solution 3 (PIE and Complementary Counting)

26 May 2023

• curprev 17:3617:36, 26 May 2023 Magnetoninja talk contribs 4,372 bytes −26 →Solution 3 (PIE and Complementary Counting)
• curprev 17:3517:35, 26 May 2023 Magnetoninja talk contribs 4,398 bytes −19 →Solution 3 (PIE and Complementary Counting)
• curprev 17:3517:35, 26 May 2023 Magnetoninja talk contribs 4,417 bytes −120 →Solution 3 (PIE and Complementary Counting)

24 May 2023

• curprev 00:0400:04, 24 May 2023 Magnetoninja talk contribs 4,537 bytes −41 →Solution 3 (PIE and Complementary Counting)
• curprev 00:0300:03, 24 May 2023 Magnetoninja talk contribs 4,578 bytes +7 →Solution 3 (PIE and Complementary Counting)
• curprev 00:0200:02, 24 May 2023 Magnetoninja talk contribs 4,571 bytes −109 →Solution 3 (PIE and Complementary Counting)

21 May 2023

• curprev 22:0222:02, 21 May 2023 Magnetoninja talk contribs 4,680 bytes +13 →Solution 3 (PIE and Complementary Counting)
• curprev 22:0222:02, 21 May 2023 Magnetoninja talk contribs 4,667 bytes +2 →Solution 3 (PIE and Complementary Counting)

20 May 2023

• curprev 12:2412:24, 20 May 2023 Magnetoninja talk contribs 4,665 bytes +13 →Solution 3 (PIE and Complementary Counting)
• curprev 11:1511:15, 20 May 2023 Magnetoninja talk contribs 4,652 bytes +67 →Solution 3 (PIE and Complementary Counting)

10 May 2023

• curprev 22:5422:54, 10 May 2023 Magnetoninja talk contribs 4,585 bytes +8 →Solution 3 (PIE and Complementary Counting)
• curprev 22:5322:53, 10 May 2023 Magnetoninja talk contribs 4,577 bytes +1 →Solution 3 (PIE and Complementary Counting)
• curprev 22:5122:51, 10 May 2023 Magnetoninja talk contribs 4,576 bytes +26 →Solution 3 (PIE and Complementary Counting)
• curprev 22:4922:49, 10 May 2023 Magnetoninja talk contribs 4,550 bytes +15 →Solution 3 (PIE and Complementary Counting)
• curprev 22:4922:49, 10 May 2023 Magnetoninja talk contribs 4,535 bytes +1,956 →Solution 2

6 September 2021

• curprev 08:3608:36, 6 September 2021 Superjj talk contribs 2,579 bytes +325 →Solution

6 July 2020

• curprev 16:4316:43, 6 July 2020 Mmmmmmmmmmmmm talk contribs m 2,254 bytes −2 →Solution 2: typo

6 January 2020

• curprev 13:3913:39, 6 January 2020 Will3145 talk contribs 2,256 bytes −1 →Solution 2

30 May 2019

• curprev 23:5423:54, 30 May 2019 Woofwoofinfinitesimal talk contribs m 2,257 bytes 0 →Solution 2
• curprev 14:0314:03, 30 May 2019 Woofwoofinfinitesimal talk contribs m 2,257 bytes +2 →Solution 2

29 May 2019

• curprev 17:0717:07, 29 May 2019 Woofwoofinfinitesimal talk contribs 2,255 bytes +13 →Solution 2
• curprev 17:0617:06, 29 May 2019 Woofwoofinfinitesimal talk contribs 2,242 bytes +2 →Solution 2
• curprev 17:0517:05, 29 May 2019 Woofwoofinfinitesimal talk contribs 2,240 bytes +906 →Solution

9 August 2018

• curprev 16:0316:03, 9 August 2018 Tempaccount talk contribs 1,334 bytes −13 Remove extra problem section
• curprev 14:4614:46, 9 August 2018 Tempaccount talk contribs 1,347 bytes +13 Adding problem section

4 July 2013

• curprev 22:3722:37, 4 July 2013 Nathan wailes talk contribs 1,334 bytes +15 No edit summary

6 April 2010

• curprev 10:4610:46, 6 April 2010 Azjps talk contribs 1,319 bytes +56 Semi-automated contest formatting - script by azjps

3 April 2010

• curprev 17:1617:16, 3 April 2010 Moplam talk contribs m 1,263 bytes −3 →solution
• curprev 17:1617:16, 3 April 2010 Moplam talk contribs m 1,266 bytes +1,266 Created page with '== Problem 8 == Let <math>N</math> be the number of ordered pairs of nonempty sets <math>\mathcal{A}</math> and <math>\mathcal{B}</math> that have the following properties: <UL>…'