Question paper generator

Question

When the user type the  number of questions and marks 

Eg: If the user wants 1marks 10 question, 2 marks 5 questions 

So based on that marks the questions should display randomly

for random selection m using this  query in access

" SELECT top 5 questions FROM [tblques] ORDER BY Rnd([quescode])

But  this should execute by taking number of questions and  marks  and total marks and execute the  question randomlu

How to do this in windows form application in c# using access