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    What is 0^0? What is 0 factorial? Please explain why.

    Math Problems
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    • Legendaryboy991L
      Legendaryboy991 M0
      last edited by Legendaryboy991

      Btw, like 2! its 2x1 3! is 3x2x1 but 1! is 1x1 but 0! is nothing!

      A 1 Reply Last reply Reply Quote 1
      • A
        Ashila M0★ M1★ M2 M3 M4 M5 @Legendaryboy991
        last edited by

        @legendaryboy991
        The answer of a calculator will display 1 for 0^0, but if you do some digging, the answer is still disputed,
        https://www.maa.org/book/export/html/116806
        Linked below is an awesome read more about the topic, the basic rundown is, if you're looking at it algebraically,
        0^0=1
        But if you're doing stuff with limits,
        0^0 is an indeterminate form
        a818e28e-7df8-4689-9335-5512fdbf0116-image.png
        also, I'm not sure what calculator you're using, but the google calculator and my Casio 115 (As well as my Casio 991) give me 0!=1, and 1! isn't nessicarily 1x1, it's just 1, i believe.

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        • Legendaryboy991L
          Legendaryboy991 M0
          last edited by

          Im using the same and I clicked on that link before

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          • Legendaryboy991L
            Legendaryboy991 M0
            last edited by

            its just that what do you multiply in 0! ?

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            • Legendaryboy991L
              Legendaryboy991 M0
              last edited by

              like 7! is 7x6x5x4x3x2x1 (you don't need one) is 5040.

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              • A
                Ashila M0★ M1★ M2 M3 M4 M5
                last edited by

                @legendaryboy991
                The thing is, you don't multiply anything in 0!, which is indeed, pretty confusing.
                You basically look at it from a logical angle instead;
                How many ways are there to arrange 'nothing'?
                1.
                By having nothing.
                So, taking your example, 7! you now have a number of ways to rearrange 7 things,
                and 0! would be 1 because there's one way to arrange it.
                0! is also what's known as an empty product (Here's a wiki article on empty products:
                https://en.wikipedia.org/wiki/Empty_product)

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                • Legendaryboy991L
                  Legendaryboy991 M0
                  last edited by

                  The thing is how to arrange 0 things????? Suppose you have nothing an you want to arrange it. That makes no sense!

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                  • A
                    Ashila M0★ M1★ M2 M3 M4 M5 @Legendaryboy991
                    last edited by

                    @legendaryboy991 it actually sorta does if u think about it-

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                    • Legendaryboy991L
                      Legendaryboy991 M0
                      last edited by

                      Hey im only going to 4th grade

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                      • E
                        energizedpanda M2★ M3★ M4 M5★ @Legendaryboy991
                        last edited by

                        @legendaryboy991 Think of it this way: How many ways to arrange 0 thins? 1: Do nothing. you can't do anything else 🙂

                        It seems that you have started your math journey pretty early! 😄

                        ~∑nergized Pand∆

                        Legendaryboy991L 1 Reply Last reply Reply Quote 1
                        • Legendaryboy991L
                          Legendaryboy991 M0 @energizedpanda
                          last edited by

                          @energizedpanda XD

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