Macalester College Problems of the Week

Spring 2009

• Problem 1117: Binary Divisibility
• Problem 1116: The Digits of 4444^4444
• Problem 1115: Randy the Distracted Researcher
• Problem 1114: Squares of 1
• Problem 1113: Student Seating
• Problem 1112: Counting Collinear
• Problem 1111: NameMyIguana

All problems © Copyright 2009 Shilad Sen and Dave Ehren. 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 [email protected].