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i tried to build this table using latex, i don't know what's wrong. What i want

\setlength\LTleft{0pt}
\setlength\LTright{0pt}
\begin{longtable}{@{\extracolsep{\fill}}|[c]@{}}


 \hline
 \multicolumn{2}{| r |}{\cellcolor{gray!25} Begin of Table}\\
 \hline
 A) Something & B) something j\\
  \hline
  C) Something & D) something j\\
 \hline
 \endfirsthead



 \hline
 \endfoot


 \endlastfoot

 \end{longtable}
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  • welcome to tex.se! do you really need longtable? is many page long? from table image is seems that tabular* or tabularx can be is sufficient.
    – Zarko
    Dec 15, 2017 at 8:22
  • Your code doesn't compile: You set up the longtable as having a single column, yet you then have a \multicolumn{2}{..}{...} directive. Please make the code compilable -- so that it actually generates the error you're looking to fix.
    – Mico
    Dec 15, 2017 at 8:37

1 Answer 1

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it is not clear, which table you like to obtain. if the first one, and if the table on the end will longer than one page, than solution can be:

\documentclass{article}
\usepackage{geometry}
\usepackage[table]{xcolor}
\usepackage{longtable, tabularx}

%-------------------------------- show page layout, only for test
\usepackage{showframe}
\renewcommand\ShowFrameLinethickness{0.15pt}
\renewcommand*\ShowFrameColor{\color{red}}
%---------------------------------------------------------------%

\begin{document}
    with \verb+longtable+:
\begin{longtable}{|*{2}{p{\dimexpr0.5\linewidth-2\tabcolsep-\arrayrulewidth\relax}|}}
    \hline
\multicolumn{2}{| c |}{\cellcolor{gray!25} Begin of Table}\\
    \hline
 A) Something   & B) something j    \\
    \hline
 C) Something & D) something j\\
    \hline
    \end{longtable}

with \verb+tabularx+:
    \begin{center}
\begin{tabularx}{\linewidth}{|X|c|X|c|}
    \hline
    \rowcolor{gray!25}
\multicolumn{4}{| l |}{What is capital of Canada?}  \\
    \hline
Berlin   & C &  Ottawa  & A    \\
    \hline
Rome    & D &  Canberra & B    \\
    \hline
\end{tabularx}
    \end{center}
\end{document}

giving

enter image description here

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