vertical spacing between enumerate and multicol increase

Question

I would like to slightly increase the vertical space between the fraction answers as currently it looks wrong (ie the spacing between and a b, c and d, and e and f:

any suggestions on formatting or how i could improve it i would appreciate also.

\documentclass{article}
\usepackage[margin=10pt, paperwidth=992pt, paperheight=558pt]{geometry}
\usepackage[fleqn]{amsmath}
\usepackage{multicol}
\usepackage{enumerate}
\usepackage{stix}
\begin{document}
\LARGE
\begin{enumerate}
\item
\begin{multicols}{3}
\begin{enumerate}[(a)]
    \item \quad $\displaystyle 2$
    \item \quad $\displaystyle \frac{3}{4}$
    \item \quad $\displaystyle \frac{16}{25}$
    \item \quad $\displaystyle \frac{11}{12}$
    \item \quad $\displaystyle \frac{23}{10}$
    \item \quad $\displaystyle \frac{3}{2}$
\end{enumerate}
\end{multicols}
\end{enumerate}
\end{document}

thanks!

Answer 1

You can use the vertical space command vspace in order to do that.

Here is a MWE:

\documentclass{article}
\usepackage[margin=10pt, paperwidth=992pt, paperheight=558pt]{geometry}
\usepackage[fleqn]{amsmath}
\usepackage{multicol}
\usepackage{enumerate}

\begin{document}
\LARGE
\begin{enumerate}
\item
\begin{multicols}{3}
\begin{enumerate}[(a)]
\item \quad $\displaystyle 2$
      \vspace{0.5cm}
\item \quad $\displaystyle \frac{3}{4}$
\item \quad $\displaystyle \frac{16}{25}$
      \vspace{0.5cm}
\item \quad $\displaystyle \frac{11}{12}$        
\item \quad $\displaystyle \frac{23}{10}$
              \vspace{0.5cm}
\item \quad $\displaystyle \frac{3}{2}$
\end{enumerate}
\end{multicols}
\end{enumerate}
\end{document}

Which generates something like this:

Answer 2

You can use more recent and powerful enumitem package. It emulates the functionality of enumerate package if you pass shortlabelsoption like

\usepackage[shortlabels]{enumitem}

Now, you can adjust the itemsep:

\begin{enumerate}[(a),itemsep=0.5\baselineskip]

so that the spacing is consistent. Further, it will be better to add some vertical phantom space in

\item \quad \vphantom{$\displaystyle \frac{3}{4}$}$\displaystyle 2$

Code:

\documentclass{article}
\usepackage[margin=10pt, paperwidth=992pt, paperheight=558pt]{geometry}
\usepackage[fleqn]{amsmath}
\usepackage{multicol}
\usepackage[shortlabels]{enumitem}
\usepackage{stix}
\begin{document}
\LARGE
\begin{enumerate}
\item
\begin{multicols}{3}
\begin{enumerate}[(a),itemsep=0.5\baselineskip]
    \item \quad \vphantom{$\displaystyle \frac{3}{4}$}$\displaystyle 2$
    \item \quad $\displaystyle \frac{3}{4}$
    \item \quad $\displaystyle \frac{16}{25}$
    \item \quad $\displaystyle \frac{11}{12}$
    \item \quad $\displaystyle \frac{23}{10}$
    \item \quad $\displaystyle \frac{3}{2}$
\end{enumerate}
\end{multicols}
\end{enumerate}
\end{document}