Permutations, Polynomial Expansion, Binomial Theorem, Injections as Ordered Selections Without Repetition

What do all of these topics have in common?

Wikipedia: Binomial Theorem

Wikipedia: Permutations

Wikipedia: Factorials

Wikipedia: Polynomial Expansions

Wikipedia: Pascal’s Triangle

Discrete Mathematics: Injections as Ordered Selections Without Repetition

  • Ah, this page is blacked out in the digitized Google Book Search version! Bah! But you can scroll down for more reading on permutations.

University of Aberdeen: Engineering 1006 Math, with a very good explanation of binomial theorem and lots of great calculus info, by Ian Craw: (html version) : (PDF version)

    More later…

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