Combinations and Permutations

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Grade Vs Difficulty:
  EasyModerateChallengingPerplexing
1-2
3-4
5-6
7-8
9-10
11-12
13-14

This is a description of combinations and permutations and counting techniques. By itself it is not a self contained math circle lesson. These notes are by Tom Davis

http://www.geometer.org/mathcircles/

It could be used with Combinatorics problems by Tom Davis to form a lesson.

Compare with Counting.