Lesson 3 Nov 23 09
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Transcript of Lesson 3 Nov 23 09
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Permutations
336
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n!a!b!c!
Permutations with identical objects.
where n is a set of objects with
a one kindb anotherc another
etc.
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How many different 5digit numbers can be made arranging
4 6 1 6 4 30 ways
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How many different "words" can be made from theletters in the word MISSISSIPPI?
34650
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How many permutations of 8 letters can be made from
P A R A L L E L30 ways3360
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How many different "words" can you make from the letters in the word STATISTICS? 50400
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Nohom, Julien, Sayana, C.J, and Janna are sitting in the stands at the talent show together.
a) How many ways can they be seated? 5! = 120 ways
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c) What if C.J. and Janna must not sit together?
b) What if C.J and Janna must sit together?
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Attachments
Poker fun with your best friends by flickr user coltfan909