\documentclass[12pt, a4paper]{article}
\usepackage[top=2cm, bottom=2cm, right=2.5cm, left=2.5cm]{geometry}
\usepackage[utf8]{inputenc}
\usepackage{amsmath, amsfonts, amssymb}
\usepackage{float}
\usepackage{graphicx}
\usepackage[portuguese]{babel}
\usepackage{graphicx}
\usepackage{multicol}
\usepackage{xcolor}
\usepackage{xwatermark}
\newwatermark[allpages, angle=45, scale=2.0, color=black!15]{matematicautodidata.com}
\title{01 - Conjuntos}
\begin{document}
\begin{minipage}[c][3cm][c]{3cm}
\includegraphics[height=3cm]{logo.png}
\end{minipage}
\begin{minipage}[c][3cm][c]{10cm}
\center
{\sc matematicautodidata.com}
\textbf{\footnotesize{Exercite!}}
\smallskip
\end{minipage}
\begin{minipage}[c][3cm][c]{5cm}
Data:
Nota:
\end{minipage}
\vspace{.5cm}
Nome: \hrulefill \, Tópico: Médio
\begin{center}
\textbf{01 - Conjuntos } % Título
\end{center}
\begin{enumerate}
\item
\item
\item
\item
\item
\item
\item
\item
\item
\item
\item
\item
\item
\item
\item
\item
\item
\item
\item
\item
\item
\item
\item
\item
\end{enumerate}
\end{document}