Trial figure\nopagebreak
\begin{figure}[H]
\begin{center}
\includegraphics[width=100pt]{latexslide}
\includegraphics[width=100pt]{latexslide}
\end{center}
\end{figure}

Trial figure\nopagebreak
\begin{figure}[H]
\begin{center}
\includegraphics[width=300pt]{M_OA_jpg}
\end{center}
\end{figure}

Trial figure\nopagebreak
\begin{figure}[H]
\begin{center}
\includegraphics[width=200pt]{M_OA_jpg}
\end{center}
\end{figure}
