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Unit: Counting, permutations, and combinations

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Counting principle and factorial

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The counting principleGet 3 of 4 questions to level up!

Permutations

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PermutationsGet 3 of 4 questions to level up!

Combinations

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CombinationsGet 3 of 4 questions to level up!
Permutations & combinationsGet 5 of 7 questions to level up!

Combinatorics and probability

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Probability with permutations and combinationsGet 3 of 4 questions to level up!

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About this unit

This unit covers methods for counting how many possible outcomes there are in various situations. We'll learn about factorial, permutations, and combinations. We'll also look at how to use these ideas to find probabilities.