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Khan Academy (English - US curriculum)
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Khan Academy (English - US curriculum)
Math by grade
Eureka Math/EngageNY
Precalculus (Eureka Math/EngageNY)
Module 5: Probability and statistics
Topic A: Lesson 2: Counting rules—The fundamental counting principle and permutations
Topic A: Lesson 2: Counting rules—The fundamental counting principle and permutations
Count outcomes using tree diagram
Counting outcomes: flower pots
The counting principle
Permutation formula
Zero factorial or 0!
Possible three letter words
Ways to arrange colors
Ways to pick officers
Permutations
