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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.

## Permutations

by CK-12 //at grade
Given a set, learn how to calculate its number of permutations.
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## Permutations

by CK-12 //at grade
Learn about permutations and how to find all possible permutations.
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1

## Permutations

by CK-12 //at grade
Find out how to distinguish a set of events that are permutations.
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## Define and Apply Permutations and Factorials

by CK-12 //at grade
This lesson covers how to define and use factorials to determine the number of permutations or arrangements of objects.
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1

## Recognizing Permutations

by CK-12 //at grade
Learn to recognize permutations in situations where order is important.
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## Permutations

by Carolyn Carroll //at grade
Given a set, learn how to calculate its number of permutations.
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0

## Permutations

by CK-12 //at grade
Given a set, learn how to calculate its number of permutations.
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0

## Permutations

by CK-12 //at grade
Learn about permutations and how to find all possible permutations.
MEMORY METER
This indicates how strong in your memory this concept is
0

## Permutations

by Algebra Book //at grade
Given a set, learn how to calculate its number of permutations.
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## Permutations

by Millard Public School Omaha, NE (www.mpsomaha.org) //at grade
Given a set, learn how to calculate its number of permutations.
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• PLIX

## Permutations: Podiums

by CK-12 //at grade
Permutations Interactive
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• Video

## Permutations: A Sample Application

by CK-12 //at grade
This video demonstrates a sample use of permutations.
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• Video

## Permutations: An Explanation of the Concept

by CK-12 //at grade
This video provides an explanation of the concept of permutations.
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• 0
• Real World Application

by CK-12 //at grade
Find out why you can increase the security of your password by making it more complex.
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• Real World Application

## Top Secret Codes

by CK-12 //at grade
Discover how Germany used permutations to send encrypted messages during World War II and how the code was eventually cracked.
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2
• Real World Application

## Wrong Number

by CK-12 //at grade
Find out how many phone numbers are possible in the United States.
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