29 May 2021

• 21:1021:10, 29 May 2021 diff hist −73 Trivial Inequality →Proof
• 21:1021:10, 29 May 2021 diff hist −171 Trivial Inequality →Proof

17 March 2019

• 08:3008:30, 17 March 2019 diff hist 0 m 2019 AIME I Problems/Problem 5 →Solution

11 March 2019

• 18:3718:37, 11 March 2019 diff hist −1 m 2017 AIME I Problems/Problem 10 →Solution
• 18:3618:36, 11 March 2019 diff hist +1 m 2017 AIME I Problems/Problem 10 →Solution: typo
• 18:3618:36, 11 March 2019 diff hist +158 2017 AIME I Problems/Problem 10 →Solution: I changed some of the wording to make it more clear and mathematically rigorous.
• 18:3218:32, 11 March 2019 diff hist +20 2017 AIME I Problems/Problem 10 →Solution 3 (Not well explained): Should this one be deleted? I said that this is the same as solution 1 but not explained as well.

10 February 2017

• 01:3501:35, 10 February 2017 diff hist +31 m 2017 AMC 10A Problems/Problem 10 →Solution