This is the "Permutations and Combinations" page of the "Geometry Chapter 7" guide.
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Geometry Chapter 7   Tags: geometry, mahlman, math  

Last Updated: Feb 17, 2011 URL: http://libguides.mpsaz.net/content.php?pid=83065 Print Guide RSS Updates

Permutations and Combinations Print Page
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Theorems

Permutation: When Order Matters

Permutation ( Allowed to REPEAT)

nr
where n is the number of things to choose from, and you choose r of them
(Repetition allowed, order matters)

Permutation ( NOT allowed to repeat)

where n is the number of things to choose from, and you choose r of them
(No repetition, order matters)

Combination: When Order Doesn't Matter

Combination (NOT allowed to repeat)

where n is the number of things to choose from, and you choose r of them
(No repetition, order doesn't matter)

Combination (allowed to repeat)

where n is the number of things to choose from, and you choose r of them
(Repetition allowed, order doesn't matter)
 

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