\documentclass[12pt]{article}
\usepackage{amsmath, amssymb, graphicx, array, fancyhdr, unicode-math}
\DeclareMathOperator{\Var}{Var}
\DeclareMathOperator{\sd}{SD}
\DeclareMathOperator{\Pois}{Pois}
\DeclareMathOperator{\Bin}{Bin}
\DeclareMathOperator{\NegBin}{NegBin}
\DeclareMathOperator{\sech}{sech}

% Text: Calibri, all bold
\setmainfont{Calibri}
\renewcommand{\seriesdefault}{b}

% Math: choose a math font and visually embolden it
\setmathfont{TeX Gyre Termes Math}
\setmathfont[FakeBold=1.9]{TeX Gyre Termes Math}

% header
\pagestyle{fancy}
\fancyhf{}
\lhead{\resizebox{!}{2cm}{B}}
\chead{\raisebox{0.5cm}{\Huge Introduction}}
\rhead{\resizebox{!}{2cm}{B}}
\setlength{\headheight}{2.5cm}
\setlength{\headsep}{12pt}

\begin{document}
\thispagestyle{fancy}

\begin{table}[h!]
\vspace{0.3cm}
\begin{tabular}{m{1.2in} m{4in}}
\centering\fbox{\includegraphics[width=1in]{images/single.png}} &

% -------------------- Single --------------
$X = \{\{
\raisebox{-0.3\height}{\includegraphics[width=0.35in]{images/penny_head.jpg}}, 
\raisebox{-0.3\height}{\includegraphics[width=0.35in]{images/penny_head.jpg}}
\},\{
\raisebox{-0.3\height}{\includegraphics[width=0.35in]{images/penny_head.jpg}}, 
\raisebox{-0.3\height}{\includegraphics[width=0.35in]{images/penny_back.jpg}}
\},\{
\raisebox{-0.3\height}{\includegraphics[width=0.35in]{images/penny_back.jpg}}, 
\raisebox{-0.3\height}{\includegraphics[width=0.35in]{images/penny_head.jpg}}
\},\{
\raisebox{-0.3\height}{\includegraphics[width=0.35in]{images/penny_back.jpg}}, 
\raisebox{-0.3\height}{\includegraphics[width=0.35in]{images/penny_back.jpg}}
\}\}$
% -------------------- Single --------------

\end{tabular}

\vspace{0.4cm}

\begin{tabular}{m{1.2in} m{4in}}
\centering\fbox{\includegraphics[width=1in]{images/abstract.png}} &
$X = \{\{HH\},\{HT\},\{TH\},\{TT\}\}$ 
\end{tabular}

\vspace{0.4cm}

\begin{tabular}{m{1.2in} m{4in}}
\centering\fbox{\includegraphics[width=1in]{images/question.png}} &
% -------------------- Question --------------

S = $\{\{$
\raisebox{-0.3\height}{\includegraphics[width=0.35in]{images/penny_head.jpg}},
\raisebox{-0.3\height}{\includegraphics[width=0.35in]{images/penny_head.jpg}},
\raisebox{-0.3\height}{\includegraphics[width=0.35in]{images/penny_head.jpg}}
\},
\{
\raisebox{-0.3\height}{\includegraphics[width=0.35in]{images/penny_head.jpg}},
\raisebox{-0.3\height}{\includegraphics[width=0.35in]{images/penny_head.jpg}},
\raisebox{-0.3\height}{\includegraphics[width=0.35in]{images/penny_back.jpg}}
\},
\{
\raisebox{-0.3\height}{\includegraphics[width=0.35in]{images/penny_head.jpg}},
\raisebox{-0.3\height}{\includegraphics[width=0.35in]{images/penny_back.jpg}},
\raisebox{-0.3\height}{\includegraphics[width=0.35in]{images/penny_head.jpg}}
\},
\{
\raisebox{-0.3\height}{\includegraphics[width=0.35in]{images/penny_head.jpg}},
\raisebox{-0.3\height}{\includegraphics[width=0.35in]{images/penny_back.jpg}},
\raisebox{-0.3\height}{\includegraphics[width=0.35in]{images/penny_back.jpg}}
\},
\{
\raisebox{-0.3\height}{\includegraphics[width=0.35in]{images/penny_back.jpg}},
\raisebox{-0.3\height}{\includegraphics[width=0.35in]{images/penny_head.jpg}},
\raisebox{-0.3\height}{\includegraphics[width=0.35in]{images/penny_head.jpg}}
\},
\{
\raisebox{-0.3\height}{\includegraphics[width=0.35in]{images/penny_back.jpg}},
\raisebox{-0.3\height}{\includegraphics[width=0.35in]{images/penny_head.jpg}},
\raisebox{-0.3\height}{\includegraphics[width=0.35in]{images/penny_back.jpg}}
\},
\{
\raisebox{-0.3\height}{\includegraphics[width=0.35in]{images/penny_back.jpg}},
\raisebox{-0.3\height}{\includegraphics[width=0.35in]{images/penny_back.jpg}},
\raisebox{-0.3\height}{\includegraphics[width=0.35in]{images/penny_head.jpg}}
\},
\{
\raisebox{-0.3\height}{\includegraphics[width=0.35in]{images/penny_back.jpg}},
\raisebox{-0.3\height}{\includegraphics[width=0.35in]{images/penny_back.jpg}},
\raisebox{-0.3\height}{\includegraphics[width=0.35in]{images/penny_back.jpg}}
\}\}



\\
\\


& $S = ?$
% -------------------- Question --------------
\end{tabular}
\end{table}

% ---------- Second page ----------
\newpage
\thispagestyle{fancy}

\begin{table}[h!]
\begin{tabular}{m{1.2in} m{4in}}
\centering\fbox{\includegraphics[width=1in]{images/key.png}} &
% -------------------- Answer --------------
S = $\{\{$
\raisebox{-0.3\height}{\includegraphics[width=0.35in]{images/penny_head.jpg}},
\raisebox{-0.3\height}{\includegraphics[width=0.35in]{images/penny_head.jpg}},
\raisebox{-0.3\height}{\includegraphics[width=0.35in]{images/penny_head.jpg}}
\},
\{
\raisebox{-0.3\height}{\includegraphics[width=0.35in]{images/penny_head.jpg}},
\raisebox{-0.3\height}{\includegraphics[width=0.35in]{images/penny_head.jpg}},
\raisebox{-0.3\height}{\includegraphics[width=0.35in]{images/penny_back.jpg}}
\},
\{
\raisebox{-0.3\height}{\includegraphics[width=0.35in]{images/penny_head.jpg}},
\raisebox{-0.3\height}{\includegraphics[width=0.35in]{images/penny_back.jpg}},
\raisebox{-0.3\height}{\includegraphics[width=0.35in]{images/penny_head.jpg}}
\},
\{
\raisebox{-0.3\height}{\includegraphics[width=0.35in]{images/penny_head.jpg}},
\raisebox{-0.3\height}{\includegraphics[width=0.35in]{images/penny_back.jpg}},
\raisebox{-0.3\height}{\includegraphics[width=0.35in]{images/penny_back.jpg}}
\},
\{
\raisebox{-0.3\height}{\includegraphics[width=0.35in]{images/penny_back.jpg}},
\raisebox{-0.3\height}{\includegraphics[width=0.35in]{images/penny_head.jpg}},
\raisebox{-0.3\height}{\includegraphics[width=0.35in]{images/penny_head.jpg}}
\},
\{
\raisebox{-0.3\height}{\includegraphics[width=0.35in]{images/penny_back.jpg}},
\raisebox{-0.3\height}{\includegraphics[width=0.35in]{images/penny_head.jpg}},
\raisebox{-0.3\height}{\includegraphics[width=0.35in]{images/penny_back.jpg}}
\},
\{
\raisebox{-0.3\height}{\includegraphics[width=0.35in]{images/penny_back.jpg}},
\raisebox{-0.3\height}{\includegraphics[width=0.35in]{images/penny_back.jpg}},
\raisebox{-0.3\height}{\includegraphics[width=0.35in]{images/penny_head.jpg}}
\},
\{
\raisebox{-0.3\height}{\includegraphics[width=0.35in]{images/penny_back.jpg}},
\raisebox{-0.3\height}{\includegraphics[width=0.35in]{images/penny_back.jpg}},
\raisebox{-0.3\height}{\includegraphics[width=0.35in]{images/penny_back.jpg}}
\}\}



\\
\\
& $S = \{\{HHH\},\{HHT\},\{HTH\},\{HTT\},\{THH\},\{THT\},\{TTH\},\{TTT\}\}$
% -------------------- Answer --------------
\end{tabular}
\end{table}

\end{document}