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(Created page with "<div class="d-none"><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></div> Four people are to be arranged in a row to have their picture taken. In how many ways can this be done?") |
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Four people are to be arranged in a row to have their picture taken. In how many ways can this be done? | |||
taken. In how many ways can this be done? | |||
Latest revision as of 23:40, 12 June 2024
Four people are to be arranged in a row to have their picture taken. In how many ways can this be done?