14.1 counting

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Last updated 4:44 PM on 8/4/22
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7 Terms

1
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Permutation
Set of distinct objects in a specific order
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P (n,r)
The number of permutations of n objects taken r at a time
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Distinguishable
Two permutations are __________ if one cannot be obtained from the other by interchanging the positions of elements of the same kind
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Combination
Any subset of r elements from a set, with no regard for order
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C (n,r)
The number of combinations of n elements taken r at a time