8 June 2025

• curprev 16:1216:12, 8 June 2025 Aoum talk contribs 6,436 bytes +100 →Categorized problem

1 December 2024

• curprev 22:1322:13, 1 December 2024 Etherealblue18 talk contribs 6,336 bytes +2 →Solution 1 (Principle of Inclusion-Exclusi)
• curprev 22:1322:13, 1 December 2024 Etherealblue18 talk contribs 6,334 bytes −2 →Solution 1 (Principle of Inclusion-Exclusion)

24 July 2024

• curprev 09:5709:57, 24 July 2024 Forest3g talk contribs 6,336 bytes −108 →Video Solutions

20 January 2024

• curprev 20:1120:11, 20 January 2024 Scrabbler94 talk contribs 6,444 bytes +291 Undo revision 211628 by Ddhh (talk) Tag: Undo
• curprev 19:2919:29, 20 January 2024 Ddhh talk contribs 6,153 bytes −291 →Problem

15 April 2023

• curprev 22:5222:52, 15 April 2023 MRENTHUSIASM talk contribs m 6,444 bytes −1 →Video Solutions
• curprev 18:1818:18, 15 April 2023 Supermathking talk contribs 6,445 bytes +9 →Video Solutions

16 January 2023

• curprev 11:0411:04, 16 January 2023 MRENTHUSIASM talk contribs 6,436 bytes 0 The year 2017 has only 365 days. Read the problem carefully. It starts at 12/31/2016, and analyze its NEXT YEAR.
• curprev 07:1107:11, 16 January 2023 L48848 talk contribs m 6,436 bytes 0 →Solution 1 (Principle of Inclusion-Exclusion)
• curprev 07:1107:11, 16 January 2023 L48848 talk contribs m 6,436 bytes 0 →Solution 1 (Principle of Inclusion-Exclusion)

13 January 2023

• curprev 21:5721:57, 13 January 2023 MRENTHUSIASM talk contribs m 6,436 bytes −1 →Solution 2 (Least Common Multiple)
• curprev 21:5721:57, 13 January 2023 MRENTHUSIASM talk contribs m 6,437 bytes −1 →Solution 2 (Least Common Multiple)
• curprev 21:5221:52, 13 January 2023 Saxstreak talk contribs m 6,438 bytes +4 →Video Solutions
• curprev 21:4921:49, 13 January 2023 Saxstreak talk contribs m 6,434 bytes +2 →Solution 2 (Least Common Multiple)

7 January 2023

• curprev 13:2613:26, 7 January 2023 Smiley owl talk contribs 6,432 bytes +1 →Solution 2 (Least Common Multiple)
• curprev 13:2613:26, 7 January 2023 Smiley owl talk contribs m 6,431 bytes −1 →Solution 2 (Least Common Multiple)

13 August 2022

• curprev 03:4503:45, 13 August 2022 MRENTHUSIASM talk contribs m 6,432 bytes −1 →Solution 3 (Linearity of expectation)

8 August 2022

• curprev 21:3821:38, 8 August 2022 Ihatemath123 talk contribs 6,433 bytes +1,152 No edit summary

28 March 2022

• curprev 03:2203:22, 28 March 2022 MRENTHUSIASM talk contribs m 5,281 bytes −1 →Video Solutions

20 March 2022

• curprev 19:1619:16, 20 March 2022 Supermathking talk contribs 5,282 bytes +45 →Video Solutions

11 March 2022

• curprev 09:5109:51, 11 March 2022 Savannahsolver talk contribs 5,237 bytes +47 →Video Solutions

2 November 2021

• curprev 11:5511:55, 2 November 2021 MRENTHUSIASM talk contribs m 5,190 bytes −4 →Solution 1 (Principle of Inclusion-Exclusion)
• curprev 09:0609:06, 2 November 2021 MRENTHUSIASM talk contribs m 5,194 bytes 0 →Video Solution
• curprev 01:0001:00, 2 November 2021 MRENTHUSIASM talk contribs 5,194 bytes 0 Swapped Sols 1 and 2, as PIE is more "official" and convenient.
• curprev 00:5100:51, 2 November 2021 MRENTHUSIASM talk contribs 5,194 bytes −630 →Solution 3 (Condensed Version of Principle of Inclusion-Exclusion): Sol 2 already does a good job explaining the solution. The conclusion of 144 is somewhat unclear in this solution. So, I will delete this solution.
• curprev 00:5100:51, 2 November 2021 MRENTHUSIASM talk contribs m 5,824 bytes −20 →Solution 2 (Detailed Version of Principle of Inclusion-Exclusion): Kept the page clean.

3 September 2021

• curprev 00:1300:13, 3 September 2021 MRENTHUSIASM talk contribs m 5,844 bytes +6 →Solution 1 (Least Common Multiple)

15 July 2021

• curprev 14:3214:32, 15 July 2021 MRENTHUSIASM talk contribs m 5,838 bytes +5 →Solution 1 (Least Common Multiple)
• curprev 14:3114:31, 15 July 2021 MRENTHUSIASM talk contribs 5,833 bytes −5 →Solution 1 (Least Common Multiple)
• curprev 13:4613:46, 15 July 2021 MRENTHUSIASM talk contribs m 5,838 bytes +2 →Solution 1 (Least Common Multiple)
• curprev 13:3413:34, 15 July 2021 MRENTHUSIASM talk contribs 5,836 bytes +810 No edit summary
• curprev 12:2012:20, 15 July 2021 MRENTHUSIASM talk contribs m 5,026 bytes +25 →Solution 1
• curprev 12:1712:17, 15 July 2021 MRENTHUSIASM talk contribs 5,001 bytes +2,522 →Solution 2
• curprev 10:5510:55, 15 July 2021 MRENTHUSIASM talk contribs 2,479 bytes −111 Although Solution 2 gives the correct answer, I don't think 365*2/3*3/4*4/5 is a legit approach. What if we change the 365 to 361 or something? Fractional days and off-by-one always haunt us. I will think of restoring an old solution. PM me if you disagre
• curprev 10:4310:43, 15 July 2021 MRENTHUSIASM talk contribs m 2,590 bytes −17 →Solution 1

9 July 2021

• curprev 21:2421:24, 9 July 2021 Happytwin talk contribs 2,607 bytes −2 →Video Solution

14 June 2021

• curprev 19:4919:49, 14 June 2021 StellarG talk contribs m 2,609 bytes +30 →Video Solution

31 March 2021

• curprev 20:3220:32, 31 March 2021 Fn106068 talk contribs 2,579 bytes −1,024 →Solution 4
• curprev 19:2219:22, 31 March 2021 Fn106068 talk contribs 3,603 bytes −5 →Solution 4
• curprev 19:2119:21, 31 March 2021 Fn106068 talk contribs 3,608 bytes +1 →Solution 4
• curprev 19:2119:21, 31 March 2021 Fn106068 talk contribs 3,607 bytes −2 No edit summary
• curprev 19:2019:20, 31 March 2021 Fn106068 talk contribs 3,609 bytes 0 →Solution 4
• curprev 19:1919:19, 31 March 2021 Fn106068 talk contribs 3,609 bytes +79 No edit summary
• curprev 19:1819:18, 31 March 2021 Fn106068 talk contribs 3,530 bytes +68 →Solution 4
• curprev 19:1619:16, 31 March 2021 Fn106068 talk contribs 3,462 bytes 0 →Solution 4
• curprev 19:1519:15, 31 March 2021 Fn106068 talk contribs 3,462 bytes +593 →Solution 4
• curprev 19:1119:11, 31 March 2021 Fn106068 talk contribs 2,869 bytes +113 No edit summary
• curprev 19:0919:09, 31 March 2021 Fn106068 talk contribs 2,756 bytes +161 →Solution 4
• curprev 19:0819:08, 31 March 2021 Fn106068 talk contribs 2,595 bytes +17 No edit summary