Text Formatting ⇒ Change Item Labels in an enumerated List

[paulosousa]

Hi,

I am with some problems with the enumerate

I want
1.
2.
2.1.
2.2.
3.
instead of
1.
2.
(a)
(b)
3.

how should I do it?

Code: Select all

\documentclass[11pt, twoside, a4paper]{article}
\usepackage[portuguese]{babel}
\usepackage[applemac]{inputenc}
\usepackage[left=2.0cm,top=1.5cm,right=2.0cm,bottom=1.5cm]{geometry}
\usepackage{amsmath,amssymb,amsfonts,textcomp,setspace,graphicx,makeidx,color,fancyhdr,enumerate,environ,tikz,tabularx,enumitem}
\usepackage[bottom]{footmisc}
\pagestyle{fancy}
\setcounter{tocdepth}{3}

\renewcommand{\headrulewidth}{0pt} % retirar linha
\renewcommand{\footrulewidth}{1pt} % colocar linha

\fancyhead{}
\lfoot{\tiny Prof. Paulo Sousa}
\cfoot{\tiny Matemática A 2012/2013}
\rfoot{\tiny \thepage}

\newcounter{choice}
\renewcommand\thechoice{\Alph{choice}}
\newcommand\choicelabel{(\thechoice)}

\newenvironment{choices}%
  {\list{\choicelabel}%
     {\usecounter{choice}\def\makelabel##1{\hss\llap{##1}}%
       \settowidth{\leftmargin}{W.\hskip\labelsep\hskip 0em}%
       \def\choice{%
         \item
       } % choice
       \labelwidth\leftmargin\advance\labelwidth-\labelsep
       \topsep=0pt
       \partopsep=2pt
     }%
  }%
  {\endlist}

\newenvironment{oneparchoices}%
  {%
    \setcounter{choice}{0}%
    \def\choice{%
      \refstepcounter{choice}%
      \ifnum\value{choice}>1\relax
        \penalty -50\hskip 7em plus 7em\relax
      \fi
      \choicelabel
      \nobreak\enskip
    }% choice
    % If we're continuing the paragraph containing the question,
    % then leave a bit of space before the first choice:
    \ifvmode\else\enskip\fi
    \ignorespaces
  }%
  {}

\NewEnviron{elaboration}{
\par
\begin{tikzpicture}
\node[rectangle,minimum width=0.2\textwidth] (m) {\begin{minipage}{0.91\textwidth}\BODY\end{minipage}};
\draw[dashed] (m.south west) rectangle (m.north east);
\end{tikzpicture}
}

\newcommand{\newfootnotemark}[1]{\addtocounter{footnote}{#1} \footnotemark[\value{footnote}]}
\newcommand{\newfootnotetext}[2]{\addtocounter{footnote}{#1} \footnotetext[\value{footnote}]{#2}}


\begin{document}

\begin{enumerate}
\item Numa cidade nasceram $5350$ meninas e $4850$ meninos, nos últimos $2$ anos. Nessa cidade, a probabilidade de nascer rapariga é de aproximadamente: \\
\begin{oneparchoices}
\choice $48\%$
\choice $50\%$
\choice $52\%$
\choice $53\%$
\end{oneparchoices}

\vspace{0.5cm}

\item Num dado país europeu sabe-se que a probabilidade de nascer menina é metade da de nascer menino. Um casal vai ter 2 filhos. 
\begin{enumerate}
\item a probabilidade de ter 2 raparigas é: \\
\begin{oneparchoices}
\choice $\dfrac{1}{3}$ 
\choice $\dfrac{2}{3}$ 
\choice $\dfrac{1}{4}$ 
\choice $\dfrac{1}{9}$
\end{oneparchoices}

\item a probabilidade de ter uma rapariga e um rapaz é: \\ 
\begin{oneparchoices}
\choice $\dfrac{2}{9}$ 
\choice $\dfrac{4}{9}$ 
\choice $\dfrac{1}{2}$ 
\choice $1$
\end{oneparchoices}
\end{enumerate}

\vspace{0.5cm}

\item Qual das seguinte expressões poderá ser um termo do desenvolvimento de $(a-b)^{18}$? \\
\begin{oneparchoices}
\choice $-816a^{16}b^2$ \hspace{1.7cm}
\choice $816a^{16}b^2$ \hspace{8.7cm}
\choice $-816a^{15}b^3$ \hspace{1.6cm}
\choice $816a^{15}b^3$
\end{oneparchoices}

\end{enumerate}
\end{document}

regards,
Paulo

[Stefan Kottwitz]

Hi Paulo,

you can get it with these two lines in your preamble:

Code: Select all

\renewcommand*{\theenumii}{\arabic{enumii}}
\renewcommand*{\labelenumii}{\theenumi.\theenumii.}

For the counter enumii (ii means second level) the presentation (\theenumii) and the label (\labelenumii) are redefined to be arabic and with dots instead of in parentheses, respectively.

The enumitem package provides a convenient interface for such settings, if you desire further customization of lists.

Stefan

[paulosousa]

Hi Stefan,

yes! worked! thanks a lot my friend, many many thanks

Paulo

[localghost]

Things would become a bit easier (and clearer) if you just used the excellent exam class.

Code: Select all

\documentclass[11pt,a4paper,portuges]{exam}
\usepackage[T1]{fontenc}
\usepackage{selinput}
\SelectInputMappings{
  aacute={á},
  otilde={õ},
  Euro={€}
}
\usepackage{babel}
\usepackage[hmargin=2cm,vmargin=1.5cm]{geometry}
\usepackage{mathtools}

\renewcommand*{\thepartno}{\thequestion.\arabic{partno}}
\renewcommand*{\partlabel}{\thepartno.}

\begin{document}
  \begin{questions}
    \question Numa cidade nasceram 5350 meninas e 4850 meninos, nos últimos $2$ anos. Nessa cidade, a probabilidade de nascer rapariga é de aproximadamente:

      \begin{oneparchoices}
        \choice 48\%
        \choice 50\%
        \choice 52\%
        \choice 53\%
      \end{oneparchoices}

    \question Num dado país europeu sabe-se que a probabilidade de nascer menina é metade da de nascer menino. Um casal vai ter 2 filhos. 
      \begin{parts}
        \part a probabilidade de ter 2 raparigas é:

          \begin{oneparchoices}
            \choice $\dfrac{1}{3}$ 
            \choice $\dfrac{2}{3}$ 
            \choice $\dfrac{1}{4}$ 
            \choice $\dfrac{1}{9}$
          \end{oneparchoices}

        \part a probabilidade de ter uma rapariga e um rapaz é:

          \begin{oneparchoices}
            \choice $\dfrac{2}{9}$ 
            \choice $\dfrac{4}{9}$ 
            \choice $\dfrac{1}{2}$ 
            \choice $1$
          \end{oneparchoices}
      \end{parts}

    \question Qual das seguinte expressões poderá ser um termo do desenvolvimento de $(a-b)^{18}$?

      \begin{oneparchoices}
        \choice $-816a^{16}b^2$
        \choice $816a^{16}b^2$
        \choice $-816a^{15}b^3$
        \choice $816a^{15}b^3$
      \end{oneparchoices}
  \end{questions}
\end{document}

Thorsten