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Top 20 Directory:
Top : Science : Math : Recreations : Famous_Problems
  		• Monty Hall
  		• Tower of Hanoi
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    Sites:
  		• The Knight's Tour Links Page: The goal is to travel with a knight around the chess board, landing on each square only once. Features web links of solutions to the game, including a solution" by Dan Thomasson.
  		• U of T Mathematics Network: Includes interactive games, problems and puzzles including the Monty Hall Problem and the Tower of Hanoi and questions pages with answers and discussion.
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