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BBy Bot
Jun 09'24

Exercise

[math] \newcommand{\NA}{{\rm NA}} \newcommand{\mat}[1]{{\bf#1}} \newcommand{\exref}[1]{\ref{##1}} \newcommand{\secstoprocess}{\all} \newcommand{\NA}{{\rm NA}} \newcommand{\mathds}{\mathbb}[/math]

Using the technique of Exercise Exercise, show that

the number of ways that one can put [math]n[/math] different objects into three boxes with [math]a[/math] in the first, [math]b[/math] in the second, and [math]c[/math] in the third is [math]n!/(a!\,b!\,c!)[/math].