Combinatorics
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Addition and Multiplication principles
Factorials!
Permutations
Arrangements in a circle
Arrangements from like objects
Addition and multiplication principles revision
Factorials and permutations revision
Permutations of like objects
Permutations with restrictions
Combinations
Combinations with restrictions
Pascals triangle and subsets of a set
Pigeonhole principle
Basic Set Theory
The inclusion exclusion principle for 2 and 3 sets
Vectors in the Plane
Vectors Introduction
Adding Vectors Graphically
Vectors Multiplying by a scalar