Right bigg bracket

Question

How can I do the right bracket like that of the left hand side?

Answer 1

I will assume that you're interested in typesetting not just a tall curly brace or two, but also some of the other stuff that's shown in the screenshot you posted.

If that's the case, do look into using a Bmatrix* environment, which is provided by the mathtools package, a superset of the amsmath package.

\documentclass{article} % or some other suitable document class
\usepackage{mathtools}  % for 'Bmatrix*' environment
\begin{document}
\begingroup % limit scope of the next instruction
\centering
\hrule % draw a horizontal rule across the width of the text block
$\begin{Bmatrix}[l]  % 'l': left-aligned contents
(123)(45),(123)(45),(123)(45),(123)(45),(123)(45),\
(123)(45),(123)(45),(123)(45),(123)(45),(123)(45),\
(123)(45),(123)(45),(123)(45),(123)(45),(123)(45),\
(123)(45),(123)(45),(123)(45),(123)(45),(123)(45)\
\end{Bmatrix}$
\hrule
$\begin{Bmatrix}[l]
(123),(123),(123),(123),(123),\
(123),(123),(123),(123),(123),\
(123),(123),(123),(123),(123),\
(123),(123),(123),(123),(123)\
\end{Bmatrix}$
\hrule
\endgroup % end of scope of '\centering' instruction
\smallskip\noindent
Hello World. % optional
\end{document}

---

Addendum to address the OP's follow-up query: Here's how I would fix the code the OP posted in a comment to (a) make it compilable without errors and (b) create full-height curly braces. Observe the use of \left\{ and \right\}.

\documentclass{article}
\usepackage{makecell,adjustbox}
\usepackage{amsmath} % for '\text' macro
\begin{document}
\begin{adjustbox}{width = 1\textwidth} 
%\large % why??
% use 'array', not 'tabular', environment:
$\begin{array}{c|c|c|c} 
\hline 
(2,1,1) := 1^1 2^2 & 
(1,2) & 
\left{    % full-height left-hand curly brace
\text{\makecell[l]{% % process contents of \makecell in text mode
(2 4)(3 5), (1 2)(3 4), (1 5)(3 4), (1 4)(2 5), (1 5)(2 3), \ 
(1 2)(4 5), (1 3)(2 5), (1 3)(2 4), (1 4)(3 5), (1 2)(3 5), \ 
(2 5)(3 4), (1 5)(2 4), (1 4)(2 3), (1 3)(4 5), (2 3)(4 5)  }} 
\right} & % full-height right-hand curly brace
15 \ 
\hline 
\end{array}$ 
\end{adjustbox}
\end{document}