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Why Do We Use Factorial? [Solved]

It’s very useful for when we’re trying to count how many different orders there are for things or how many different ways we can combine things. For example, how many different ways can we arrange n things? We have n choices for the first thing.

Factorial and counting seat arrangements | Probability and Statistics | Khan Academy

Probability and statistics on Khan Academy:

#1: Why to use Factorial Experiment⁉️🤔🤩 Reasons✍

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Factorial Example

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