A factorial is notated with an exclamation mark! and is defined as: .0! = 1 .1!...

 

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A factorial is notated with an exclamation mark! and is defined as: .0! = 1 .1! = 1 2! = 2.1 2 3! = 3.2.1 = 6 .4!= 4.3.2.1 = 24 5! 5.4.3.2.1 = 120 - n!= n (n 1) (n 2) 3 2-1 - n! = n(n 1)! 6! Find 4! A factorial is notated with an exclamation mark! and is defined as: .0! = 1 .1! = 1 2! = 2.1 2 3! = 3.2.1 = 6 .4!= 4.3.2.1 = 24 5! 5.4.3.2.1 = 120 - n!= n (n 1) (n 2) 3 2-1 - n! = n(n 1)! 6! Find 4!