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# Permutations

## The number of arrangements when order matters

Levels are CK-12's student achievement levels.
Basic Students matched to this level have a partial mastery of prerequisite knowledge and skills fundamental for proficient work.
At Grade (Proficient) Students matched to this level have demonstrated competency over challenging subject matter, including subject matter knowledge, application of such knowledge to real-world situations, and analytical skills appropriate to subject matter.
Advanced Students matched to this level are ready for material that requires superior performance and mastery.
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## Permutations - Overview

by CK-12 //basic
Overview
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## Permutations

by CK-12 //basic
Learn to evaluate factorials, use permutations to solve problems, and determine the number of permutations with indistinguishable items.
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• Video

## Permutations: An Introduction

by CK-12 //basic
An introduction to permutations.
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## Permutations - Example 1

by CK-12 //basic
Word Problems - Find the number of permutations of n Elements
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## Permutations - Example 2

by CK-12 //basic
Word Problems - Find the number of permutations of n Elements taken r at a time
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## Permutations - Example 3

by CK-12 //basic
Word Problems - Find the number of distinguishable permutations of n objects
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## Permutations (Precalculus) - Example 1

by CK-12 //basic
Word Problems - Find the number of permutations of n Elements
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## Permutations (Precalculus) - Example 2

by CK-12 //basic
Word Problems - Find the number of permutations of n Elements taken r at a time
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## Permutations (Precalculus) - Example 3

by CK-12 //basic
Word Problems - Find the number of distinguishable permutations of n objects
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## Permutations - Example 4

by CK-12 //basic
Finding Permutations of n objects taken r at a time
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## Permutations - Example 5

by CK-12 //basic
Finding Permutations with Repetition
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## Permutations - Example 6

by CK-12 //basic
Counting the Number of Permutations
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## Permutations - Example 7

by CK-12 //basic
Finding Permutations of n objects taken r at a time
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## Permutations - Example 8

by CK-12 //basic
Finding Probability Using Permutations
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