Zero factorial = 1
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0!=1! 1=1 The factorial of 0 is 1, not 0
Zero factorial, written as 0!, equals 1. This is a simple math equation.
The value of 9 factorial plus 6 factorial is 363,600
27 factorial = 10,888,869,450,418,352,160,768,000,000
1 factorial = 1