# Two separate Tables of Contents

I need to have two separate Tables of Contents, which share only one chapter, like this:

Introduction .......1

Probability .......10

Random Variables...20

Introduction .......1

Curves.............50

Surfaces...........60

I tried various methods, but I finally gave up after hours of trying. Could someone please help? Thanks

The setcounter{page}{...} are only for demo here.

\documentclass{article}
%\setcounter{secnumdepth}{0}% for unnumbered sections
%\setcounter{tocdepth}{1}   % for unnumbered sections
\begin{document}
\tableofcontents

\newpage\setcounter{page}{1}
\section{Introduction}

\newpage\setcounter{page}{10}
\section{Probability}

\newpage\setcounter{page}{20}
\section{Random Variables}