Why are most factorials even? PROOF

Описание к видео Why are most factorials even? PROOF

This is the proof by induction for the fact that all factorials of numbers greater than or equal to 2 are even.

Table of Contents
• 0:00 intro
• 0:49 examples
• 3:02 definition of even
• 3:42 deriving definition of factorial
• 7:17 observe factorials within factorials
• 9:07 Induction proof
• 11:50 Start of proof
• 12:46 Base case
• 14:30 induction step
• 19:05 return of factorials within factorials
• 21:38 conclusion

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