# Combination

# Colorized Definition

\newcommand{\order}{\color{c1}}
\newcommand{\total}{\color{c2}}
\newcommand{\stopCount}{\color{c3}}
\newcommand{\partOne}{\color{c4}}
\newcommand{\combo}{\color{c5}}

$$\combo C(\total n, \partOne k \combo ) = \stopCount \frac{ \order P(n,k)}{ \stopCount k!} $$
\combo      To group (combine) \partOne k \combo items from \total n \combo choices, 
\\
\order count the specific permutations
\plain      and
\\ 
\stopCount  consolidate the reorderings within the group

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