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Curated Video
What are Factorials?
In this video we explain what a factorial is, how to calculate them and how to use the factorial formula. Practice questions and answers are at the end of the video.
Brian McLogan
How to simplify an expression with factorials
👉 Learn all about factorials. Factorials are the multiplication of a number in descending integer values back to one. Factorials are used often in sequences, series, permutations, and combinations. Factorial quotient expressions are...
Massachusetts Institute of Technology
Mit: Blossoms: Fantastic Factorials
The aim of this video lesson is to introduce the concept of factorials, and to show students that everyday events in their lives have so much to do with factorials - even if they do not realize it! During this video, students will learn...
Khan Academy
Khan Academy: Calculating Factorials (Video)
Now that we have a feeling for constructing permutations let's introduce the factorial formula to make counting them easy. [1:33]