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# Basics question for today

Vikas K.
20/02/2019 0 1

Can u tell why  factorial 0 and factorial 1 has same value as 1?

0 Dislike

Shubham Pal | 01/04/2019

Concept is related to permutations, since n! Denotes the number of ways in which the n things can be arranged. So 0! is a number in which you can arrange zero things or an empty set { }, that is 1. Another explaination is- since (n-1)!= n! / n, by this rule we can say 0!= 1

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