Jsp question.. using random..

hi guys ,
have a quick question regarding jsp and database interection...wonering if this can be done?
i have a databse where many questions are stored in a databse...
and there are 10 questions.
1...if the user wanted only 8 random questions to come up, how would one go about this...
math random would prob be used but im not that familiar with the method or know it works...
2....what if i needed to store the number of random questions..
3.. the page should then only display the specified random question...
any help would be appreciate.. code samples welcome!
Thanks!

um i dont think i have explained my self clearly..
before the test is taken.. the teacher specifies that the system should choose a ramdom number of question to be repsented to the user for example... 15 questiosn stored ... ask random 10.
later on the day the student takes the test and 10 questions are displayed...
the questions are stored in a databse.. and might have to store the random number of questions.. i cant do the way suggessted as all questions appear on one page..
the question im asking is .. how would you get the random 10 questions out of 15 from the database?

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=============================
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