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Macalester College Problems of the Week

Fall 2010

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• Problem 1139: The Mysterious 17th Divisor
• Problem 1138: Surveying on Earth [Bicycle #161]
• Problem 1137: A 13 Cent Problem [Bicycle #43]
• Problem 1136: A Square Angle
• Problem 1135: Vampire Numbers
• Problem 1134: Googol Factorial [Bicycle #90]
• Problem 1133: RoundUp
• Problem 1132: Subtract or Halve
• Problem 1131: Four-Way Tennis Match
• Problem 1130: A True Diagonal Problem
• Problem 1129: Sources on a Cube

All problems © Copyright 2010 Stan Wagon. Reproduced with permission.

Please don't ask us for answers! Solutions for almost every problem are posted to the mailing list, but at Professor Wagon's request we do not reproduce them here. If you can't sleep without knowing the answer to one of these problems, please contact Professor Wagon at wagon@macalester.edu.

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