Middle school year 6 Générale Spécialité



Soit n un entier naturel.
On appelle factorielle de n le nombre noté n! défini par :
  • 0!=1
  • et pour tout n, (n+1)!=(n+1)×n!.


Pour tout entier naturel n tel que n2, n!=1×2××(n1)×n.
Author of the page: Euler, Académie de Versailles

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