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I know there are several latex packages like exsheets can make choice problems, but I like to use multicol and enumitem packages to make them. My little example is as follows:

\documentclass{article}

\usepackage{amsmath,amssymb,amsthm}
\newtheorem{ex}{Exercise}


\usepackage[shortlabels]{enumitem}
\setenumerate{nolistsep}


\usepackage{multicol}
\setlength\multicolsep{0pt}


\begin{document}


\section{Choices}


\begin{ex}
Which letter is a vowel?
\begin{multicols}{4}
\begin{enumerate}[(A)]
\item a
\item b
\item c
\item d
\end{enumerate}
\end{multicols}
\end{ex}


\begin{ex}
Which animal is the best?
\begin{multicols}{2}
\begin{enumerate}[(A)]
\item cats
\item dogs
\item horses
\item cows
\end{enumerate}
\end{multicols}
\end{ex}


\begin{ex}
Which mathematical formula do you prefer?
%\begin{multicols}{1}
\begin{enumerate}[(A)]
\item The minimal surface equation
\item The Callan-Symanzik equation
\item Euler's Identity
\item Euler-Lagrange equations and Noether's theorem
\end{enumerate}
%\end{multicols}
\end{ex}


\end{document}

Since \begin{multicols}{1} is not supported by multicol package, one can just comment it and \end{multicols} to get the goals. However, if I want to make multicol compatible with one column, then what should I do? Btw, I also note that in here there is a little complex solution can make it. Does there exist a simpler way?

Phelype Oleinik
  • 70,814
John Stone
  • 273
  • 1
    What's the actual problem with just leaving out the multicols environment when you want a single column? Are you trying to define a custom command that takes the number of columns as an argument? I think that could be solved other ways. – frabjous Jun 19 '22 at 16:12

0 Answers0