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Torsten Sillke  
A collection of puzzles statements, with references, on a variety of topics: operations research, such as crossing the bridge; logic, including liars and truth tellers, mastermind, and age problems; lateral thinking, also known as "situation puzzles"; probability, with a generalization and approximation of the birthday problem; counting; arithmetic and analysis; floor and ceiling; whole number; mechanical; packing, covering and dissecting; geometry, featuring several "bamboozlement" puzzles; topology, including Sam Lloyd's "magic holetite pencil," which gave rise to the expression "to buttonhole someone"; information, including weighting problems; combinatorics; and algebra.  


Levels:  Middle School (68), High School (912), College 
Languages:  English 
Resource Types:  Problems/Puzzles, Bibliographies 
Math Topics:  Basic Algebra, Analysis, Arithmetic/Early Math, Algorithms, Geometry, Logic/Foundations, Operations Research, Probability, Topology, Cryptography 
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