Monday, April 4, 2011

a slight correction

From my brother Steve (meant to post this on Friday but my computer crashed):

I did notice an error in my email.  I removed a sentence that made things more complicated, and inadvertently used the word combinations, instead of permutations.  It should be obvious which one is which, but you can flip a coin when you fix it.
 
http://betterexplained.com/articles/easy-permutations-and-combinations/

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