Hi R-helpers I would like to ask if someone knows a library or a function that shows all the possible combinations based on Arrangement sets (not just combinations or permutations). I have installed the combinat library but there is not a respective function for arrangements sets. That is, i need a function for the type n!/(n-k)! (not just the possible number of these combinations- that's easy of course) but which exactlty are these possible combinations. Thanks in advance. Kind regards Vangelis --------------------------------- http://login.yahoo.com/config/mail?.intl=gr [[alternative HTML version deleted]]