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• 2001 IMO Problems/Problem 3
  ...e problem that was solved by both the girl and the boy. Show that there is a problem that was solved by at least three girls and at least three boys. ...girl are the holes and the boys are the pigeons, and the guy/pigeon enters a hole/problem which he solved in common with the girl).
  2 KB (453 words) - 07:27, 26 November 2020