If i make three exams with the command \dorecurse[3], in the first exam i found the hints and the answers of all exams.
I try with the commands \resetnumber[hint, answer], but don't work.
%%%% begin question-hint-answer-blocks.tex
\defineblock[question]
\defineblock[hint]
\defineblock[answer]
\defineenumeration[question]
[alternative=hanging,
width=2.5cm,
text={Question},
headstyle={\bi},
stopper={.}]
\defineenumeration[hint]
[alternative=hanging,
width=4cm,
text={Hint for question},
headstyle={\bi},
stopper={.}]
\defineenumeration[answer]
[alternative=hanging, width=4.5cm,
text={Answer to question},
headstyle={\bi},
stopper={.}]
\setupblock[question][before={\startquestion},after={\stopquestion}]
\setupblock[hint][before={\starthint},after={\stophint}]
\setupblock[answer][before={\startanswer},after={\stopanswer}]
\keepblocks[question]
\hideblocks[hint]
\hideblocks[answer]
\startsetups examn:make
\resetnumber[answer]
\resetnumber[question]
\resetnumber[hint]
\page
\setcounter[userpage][1]
\centerline{\kap{Maths}}
\centerline{\kap{Worksheet}} \crlf
Name:\thinrules[n=1]%, interlinespace=big]
Evaluation:\thinrules[n=1]%, interlinespace=big]
\getbuffer[examn]
\stopsetups
\starttext
\setuppagenumbering[state=stop]
\startbuffer[examn]
\section{Questions}
\beginquestion
Compute $4\times 5$.
\endquestion
\beginhint
Use the fact that $2\times 5 = 10$.
\endhint
\beginanswer
$20$.
\endanswer
\beginquestion
What is the value of $100 / 10$?
\endquestion
\beginhint
Remember that $10\times 10 = 100$.
\endhint
\beginanswer
$10$
\endanswer
\section{Hints to all questions}
\useblocks[hint]
\section{Answers to all questions}
\useblocks[answer]
\setuppagenumber[number=1]
\stopbuffer
\setuprandomize[124] % set a seed
\dorecurse{3} {\setups[examn:make]}
\stoptext
Thanks a lot
Jorge