$\definecolor{red}{RGB}{255,0,0}$$\definecolor{black}{RGB}{0,0,0}$
  1. $n!$
  2. $n!$
  4. $n!$
    • $$\color{blue}{\rightarrow}\color{black}\;n! \;= \;1\cdot 2\cdot 3....\cdot(n-1)\cdot n$$
  1. $n$
  2. $n$
  4. $n$
    • $$\color{blue}{\rightarrow}\color{black}\;n \;$$ given: $$\color{black}n!$$
Combination Analysis: Calculate factorials

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