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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.

## Combination Problems

Count and evaluate combinations

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## Evaluate Combinations using Combination Notation

Use combination notation to evaluate combinations.

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• Practice
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## Combination Problems Practice

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• Critical Thinking

## Combination Problems Discussion Questions

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

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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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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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## Count and Evaluate Combinations While Read

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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## Evaluate Combinations using Combination Notation

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

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• Real World Application

## Combinations

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

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• Real World Application

## Civic Duty

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

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• Flashcards