Factorials

A factorial is the product of all positive integers less than or equal to a number. The number $(n)$ followed by the symbol $!$ represents a factorial. For example, if $n=5$, then $n!=5!=5\cdot 4\cdot 3\cdot 2\cdot 1=120$. We say, "Five factorial is 120." Enter a number and the answer is automatically calculated. Press the Clear to remove answer.

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