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Aug 8, 2012 ... What is a factorial, and how is the exclamation point used in mathematics? ... The Mathematical Definition of Factorial for Positive Integers ... For example, set A={a} has exactly one arrangement. However, set ... Can you do ! - read more

Jan 2, 2005 ... In Statistics or Math, does anyone know what the "!" (exclamation point) stands for ? Please ... It's not mere convention or just a definition. In Set ... - read more

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