math

what does ! mean in math

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asked by PAVLEEN
  1. ! is called the "factorial" symbol.
    N! is the product on N and all smaller integers. (N must be an integer itself)

    Here are some examples:
    2! = 1 x 2 = 2
    4! = 1 x 2 x 3 x 4 = 24
    7! = 1 x 2 x 3 x 4 x 5 x 6 x 7 = 5040

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    posted by drwls

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