\documentclass[12pt, titlepage]{report} \usepackage{amsmath}
\usepackage{amsfonts}
\usepackage{amssymb}
\usepackage{txfonts}
\usepackage[english]{babel}
\usepackage{graphicx}
\usepackage[a4paper]{geometry}
\usepackage{epsfig}
\usepackage{graphicx}
\usepackage{subfig}
\usepackage{verbatim}
\usepackage{array}
\usepackage{mathtools}
\usepackage{subfig}
\usepackage{float}
\usepackage[makeroom]{cancel}

\newcommand\perm[2][n]{\prescript{#1\mkern-2.5mu}{}P_{#2}}
\newcommand\combo[2][n]{\prescript{#1\mkern-2.5mu}{}C_{#2}}

\begin{document}

\section*{Example HMM 1}

This HMM will be used as an example HMM to demonstrate standard HMM algorithms.  This HMM contains 6 states with 2 of these states (the begin state and end state) being silent.  The other four states are each associated with a probability distribution for emitting a single DNA residue.
\\\\

\begin{figure*}[htbp]
\centering
\includegraphics[scale=0.7]{hmm.png}  
\caption{Example HMM 1}
\label{sample}
\end{figure*}


\end{document}