I want to typeset this table:
As you see, it's hard to use multicolumn
here. I tried 2 consecutive tables:
\documentclass{article}
\usepackage[a5paper]{geometry}
\usepackage{tabularx}
\usepackage{lipsum}
\usepackage{array}
\setlength{\parindent}{0cm}
\begin{document}
\begin{tabularx}{\textwidth}{ | X | X | }
\hline
1 & 2\\
\hline
\end{tabularx}
\begin{tabularx}{\textwidth}{ |m{20mm} | X|m{20mm}| }
1 & 2 & 3\\
\hline
\end{tabularx}
\end{document}
But there is a gap between them.
Any suggestions about typesetting the top table?