Permutations

Reference Topics 12-3

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Here is a comparison of permutations and combinations.
http://www.mathsisfun.com/combinatorics/combinations-permutations.html

A review of counting principles including the fundamental counting principle, permutations, combinations, and distinguishable permutations.
http://www.richland.cc.il.us/james/lecture/m116/sequences/counting.html

 … See the whole entry

Section 12.1: Permutations

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12.1 Outline

  1. Election problem
    1. tree diagram
    2. fundamental counting principle
    3. arrangement
    4. ordered pair/ordered triple
    5. define permutation
    6. notation for permutations
    7. evaluating permutations
  2. Factorial
    1. definition
    2. multiplication property of factorials
    3. count-down property
    4. permutation formula
  3. Distinguishable permutations
    1. indistinguishable items
    2. distinguishable items
    3. formula for distinguishable permutations
… See the whole entry