Factorial

  • Denoted by n!
  • The factorial of an integer n is the product of the integers from n down to 1
  • Example: 4! = 4 x 3 x 2 x 1 = 24
  • Special Cases: 0! = 1, and 1! = 1
  • Application: Determining the number of ways or permutations n distinct objects can be displayed

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