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    Derivation for 0! =1 - Why 0 Factorial is 1 ? - Teachoo
    Davneet Singh's image
    Davneet Singh

    Hello Rishabh

    By definition, 0! = 1

     

    Just like 2 comes after 1, 3 comes after 2.

    Same way,

    Zero Factorial = 1

     

    There cannot be any derivations for it.

    It's like a universal truth, something which cannot be changed or derived.


    Written on Oct. 2, 2017, 2:22 p.m.