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9.6 Combinations and Permutations

# 9.6 Combinations and Permutations - 9.6 Combinations and...

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Agenda: 1. Go over classwork 2. Quiz 3. Lesson: 9.6 Combinations and Permutations _______________________ Go over classwork _______________________ Quiz _______________________ Lesson: 9.6 Combinations and Permutations Goal: Use Combinations and Permutations to count DOD Permutation (order is important, so AB is different than BA) A permutation of elements is an ordering of the elements such that one element is first, one is second, one is third, and so forth. Number of Permutations of Elements Permutations of Elements Taken at a Time The number of permutations of elements taken at a time is: Example: Distinguishable Permutations Suppose a set of objects has of one kind of object, of a second kind of object, of a third kind, and so on, with . Then the number of distinguishable permutations is 9.6 Combinations and Permutations Wednesday, November 09, 2011 6:47 AM Ch_9 Page 1

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You will use this when repeated letters show up. Combinations (when order is not important, so AB is the same as BA) Combinations of Elements Taken at a Time The number of combinations of

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9.6 Combinations and Permutations - 9.6 Combinations and...

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