\documentclass[a5paper]{scrartcl}
\usepackage[english]{babel}
\usepackage[utf8]{inputenc}
\usepackage[super]{nth}

\begin{document}
    The \verb+nth+ package is my \nth{1} choice when it comes to typsettingh
    nth-stuff. It might also be my \nth{2} and \nth{3} choice.
\end{document}