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# Combination Problems

## Using n!/r!(n - r)! to calculate permutations

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.
• Read

## Combination Problems

by CK-12 //at grade

Find out how to calculate combinations given different scenarios.

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• Read

## Evaluate Combinations Using Combination Notation

by CK-12 //at grade

Learn to use combination notation to evaluate combinations.

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• Read

## Calculating Combinations II

by CK-12 //at grade

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• Read

## Using Technology

by CK-12 //at grade

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• PLIX

## Pigeonhole Principle: Friends at a Party

by CK-12 //at grade

Combination Problems Interactive

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• Downloadable Quiz

## Combination Problems Quiz

by CK-12 //at grade

11 questions about Combination Problems.

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• Practice
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## Combination Problems Practice

by CK-12 //at grade
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• Critical Thinking

## Combination Problems Discussion Questions

by CK-12 //at grade

A list of student-submitted discussion questions for Combination Problems.

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• Pre Read

## Combination Problems Post Read

by CK-12 //at grade

To activate prior knowledge, make personal connections, reflect on key concepts, encourage critical thinking, and assess student knowledge on the topic prior to reading using a Quickwrite.

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• Pre Read

## Combination Problems Pre Read

by CK-12 //at grade

To stress understanding of a concept by summarizing the main idea and applying that understanding to create visual aids and generate questions and comments using a Concept Matrix.

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• While Read

## Count and Evaluate Combinations While Read

by CK-12 //at grade

Promote connections between specific points in the concept’s reading and the reader’s personal experiences. Connect text with personal experience in order to deepen understanding and engagement as well as promote class discussion.

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• While Read

## Evaluate Combinations using Combination Notation

by CK-12 //at grade

Connect your daily life experiences with specific points in a reading using a Double Entry Diary.

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• Real World Application

## Combinations

by CK-12 //at grade

Students will analyze their chances of winning the lottery, using Combinations.

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• Real World Application

## Civic Duty

by CK-12 //at grade

Find out how lawyers work to choose the right combination of jurors for each trial.

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• Flashcards

## Permutations and Combinations Flashcards

by CK-12 //at grade

These flashcards help you study important terms and vocabulary from Permutations, Permutation Problems, Permutations with Repetition, Combinations, and Combination Problems.

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