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*In <math>FACTORIAL (Number)</math>,<math>Number</math> is any positive integer.
*In <math>FACTORIAL (Number)</math>,<math>Number</math> is any positive integer.
*So the factorial <math>n!</math> is defined for a positive integer n as:
*So the factorial <math>n!</math> is defined for a positive integer n as:
<math>n!=n(n-1)...2·1</math>.
<math>n!=n*(n-1)*...2*1</math>.
*For example 4!=4*3*2*1 = 24.
*For example 4!=4*3*2*1 = 24.
*The given number will truncated to integer if the given number is in Decimal.
*The given number will truncated to integer if the given number is in Decimal.