<html><head><meta name="color-scheme" content="light dark"></head><body><pre style="word-wrap: break-word; white-space: pre-wrap;">\documentclass[a4paper,12pt]{article}
\begin{document}
\parindent=0pt

{\bf Question}

Evaluate the determinant $\left| \begin{array}{cc} 1 &amp; 2 \\ 3 &amp; 4
\end{array} \right|$


\vspace{.25in}

{\bf Answer}
\bigskip

$\left| \begin{array}{cc} 1 &amp; 2 \\ 3 &amp; 4 \end{array} \right| = 4 -
6 = -2$


\end{document}
</pre></body></html>