Is there other possible way for continuous numbering?

Question

I am creating a document using exam class. I have four question types here which i had created each a command. Is there facility to enforce continuous numbering for each question types instead of using the \begin{questions} ended with \end{questions}.

example:

I. True or False Question type
 1. ____ text text text text text text.
 2. ____ text text text text text text.
 3. ____ text text text text text text.

II. Enumeration
 4. Elements of  nature
 5. text text text text text text.
 6. text text text text text text.

The sequence of the number in Part I is continued in the Part II. How can I make something like this one?

Answer 1

Try the enumitem package:

\documentclass{article}
\usepackage{enumitem}

\begin{document}

\begin{enumerate}
  \item First question
  \item Second question
\end{enumerate}

Some other stuff...

\begin{enumerate}[resume]
  \item More items 
  \item ...
\end{enumerate}

\end{document}

For more complicated nesting, you might want to use the series option of the package.

Answer 2

Simply put \setcounter{tfno}{0} before defining the truefalse environment as in this code:

\documentclass{article}
\usepackage{amssymb,graphicx}
\usepackage{array,enumitem}
\usepackage{longtable}
\newcounter{tfno}
\renewcommand\arraystretch{2}
\newcommand{\mybox}{\resizebox{.5cm}{!}{\raisebox{-.5ex}{$\Box$}}}
%
\setcounter{tfno}{0} %% moved here
\newenvironment{truefalse}{%
%\setcounter{tfno}{0}  %% moved up
\setlength\LTleft{0pt}
\setlength\LTright{0pt}
\begin{longtable}{>{\stepcounter{tfno}\thetfno.}cp{.5\textwidth}@{\extracolsep{\fill}}cc}
\multicolumn{1}{r}{}&  & \fbox{\parbox{.75cm}{True}} & \fbox{\parbox{.75cm}{False}}  \\
}{%
\end{longtable}
}
\newcommand\tfquestion[1]{ & #1 & \mybox  & \mybox  \\}
\begin{document}
\begin{enumerate}[label=\Roman*.]
\item First set of questions
\begin{truefalse}
  \tfquestion{This is a sample text.}
  \tfquestion{This is another sample short text.}
  \tfquestion{This is a long line containing text and wrapping into second line without hitting the boxes}
\end{truefalse}
%
\item Second set comes here.
\begin{truefalse}
  \tfquestion{This is a sample text.}
  \tfquestion{This is another sample short text.}
  \tfquestion{This is a long line containing text and wrapping into second line without hitting the boxes}
\end{truefalse}
\end{enumerate}

\end{document}

Answer 3

If you don't want to have the question numbers start over again from 1, then don't end the questions environment. You can use the standard LaTeX \section command to insert your section headings, and if you enclose the \section command in the argument of a \fullwidth command, it won't be indented. For example, if you type

\documentclass[12pt]{exam}
\begin{document}
\renewcommand{\thesection}{\Roman{section}}
\begin{questions}
\fullwidth{\section{True or false question types}}
  \question This is one of the questions.
  \question This is one of the questions.
  \question This is one of the questions.

\fullwidth{\section{Enumeration}}
  \question This is one of the questions.
  \question This is one of the questions.
  \question This is one of the questions.
\end{questions}
\end{document}

then you'll get