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Demonstrations 81  100 of 245
Playing Cards
A Bitter Chocolate Problem That Satisfies an Inequality
Gaussian Brackets
Equivalence of Two Fibonacci Number Interpretations
Perfect Riffle Shuffling
Permutation Lattice
Continuous Binomial Function in 3D
SelfAvoiding Paths through a Lattice
Eulerian Numbers versus Stirling Numbers of the First Kind
Two Types of Hexagonal Polyominoes Counted by Area and Number of Columns
How Many Right Triangles Can You Find?
Number of Handshakes
Stirling Numbers of the Second Kind and Nonattacking Rooks
U.S. City Tours
Folding a 2×n Sheet of Labeled Stamps
Proving Euler's Polyhedral Formula by Deleting Edges
Open Meanders
LittlewoodOfford Problem
Generating Permutations by a Sequence of Transpositions
The Number of Partitions into Odd Parts Equals the Number of Partitions into Distinct Parts
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