Question: Solve the given problems involving factorials. Show that n! = n (n 1)! for n 2. To use this equation for n

Solve the given problems involving factorials.

Show that n! = n × (n − 1)! for n ≥ 2. To use this equation for n = 1, explain why it is necessary to define 0! = 1 (this is a standard definition of 0!).

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