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• 1993 AIME Problems/Problem 1
  == Solution 2 by PEKKA(more elaborate) == ~PEKKA
  3 KB (440 words) - 21:20, 22 July 2021
• 1961 IMO Problems/Problem 2
  ~PEKKA
  4 KB (849 words) - 07:29, 30 July 2024
• 2009 AMC 10B Problems/Problem 15
  ~PEKKA
  3 KB (545 words) - 13:37, 3 September 2023
• 2016 AIME I Problems/Problem 2
  ~PEKKA
  3 KB (377 words) - 14:49, 17 October 2021
• 2017 AMC 8 Problems/Problem 25
  ~PEKKA
  3 KB (390 words) - 09:59, 14 December 2024
• 2017 AMC 8 Problems/Problem 7
  ~PEKKA
  2 KB (382 words) - 17:41, 29 December 2024
• 2017 AMC 8 Problems/Problem 12
  ~PEKKA
  1 KB (219 words) - 18:00, 11 January 2025
• 2020 AMC 8 Problems/Problem 21
  ~PEKKA
  7 KB (1,183 words) - 21:38, 15 January 2025