First, sorry for my english.
Hi, Im doing my final project in the University and I need some help with this features of my document.
How can I put pair numbers in the right side of the document and odd numbers in the left side of the document, in the numbering?
I want some like this pictures where you can see when I start a new chapter the numbering is in the middle of the page in the bottom.
Pair numbers of numbering are in the left side and Odd numbers of numbering are in the right side.
Note: In the first picture ignore the image with a number twelve, the important of this image is the number 5 and the start of chapter.
Im a newbie in Latex and I dont know what packages I have and I dont care so much. If you say me one package to use I will add that in my project.
\documentclass{article}
\usepackage[left=3cm, right=2.5cm, top=2.5cm, bottom=2.5cm]{geometry}
\usepackage{lipsum}
\usepackage{fancyhdr}
\pagestyle{fancy}
\lhead{}
\chead{}
\rhead{\textcolor[gray]{0.5}{\textit{\nouppercase \leftmark}}}
\lfoot{}
\cfoot{}
\rfoot{\textcolor[gray]{0.5}{\thepage}}
\renewcommand{\headrulewidth}{0.2pt}
\fancypagestyle{detailed}{
\fancyhf{}
\fancyfoot[R]{\textcolor[gray]{0.5}{\thepage}}
\renewcommand{\headrulewidth}{0pt}
}
\usepackage[round]{natbib}
\usepackage[usenames,dvipsnames,svgnames,table]{xcolor}
\begin{document}
\chapter{Introducción}
\section{First Section}
\lipsum[1-3]
\section{Second Section}
\lipsum[1-7]
\section{Third Section}
\lipsum[1-6]
\end{document}
I think the problem is here
\usepackage{fancyhdr}
\pagestyle{fancy}
\lhead{}
\chead{}
\rhead{\textcolor[gray]{0.5}{\textit{\nouppercase \leftmark}}}
\lfoot{}
\cfoot{}
\rfoot{\textcolor[gray]{0.5}{\thepage}}
\renewcommand{\headrulewidth}{0.2pt}
And If you compile my code you can see what I want. I want the number one of numbering in the middle of the page because is a new chapter like a the images.
The number two of the numbering should be in the left side and the number three in the last page should be in the right side.





\documentclasscommand, have a minimal preamble and then\begin{document}...\end{document}. Also what "pair numbers" do you want on the left and right hand sides? Are these page numbers? – Dec 12 '17 at 09:16