[RESOLVED] I have 17 numbers...

I really would appreciate some help with this little problem i have here...
I have 17 numbers. I need to figure out how many different combinations there would be of these numbers when there are 7 numbers to a set (i.e. if i had 1 2 3 4 5 6 7 and 8 then i would have many different sets. 1 2 3 4 5 6 7 and 2 3 4 5 6 7 8... so on...) in each set of 7 numbers there can be no repeated numbers but the same numbers can be used in another set if you get what i mean... I need to find out how many different combinations of these sets there will be and a way of representing them so i can adopt the 17 numbers into it. I.E. if i just get given a number of how many combinations there are it won't help i need the ways they combine together because i need to add the 7 numbers together in each set... however many sets there will be... I know it is a little sketchy but if anyone can help, please do. Don't hesitate to private message or e mail... will respond to any feedback positively :)
Thanks.

I believe you need to better explain why the the number combinations of 17 items taken 7 at a time is NOT the correct answer. If switching order of appearance is not permitted, then you are lookinmg for combinations:

Using Excel notation =COMBIN(17,7) = 19,448

If switching order of appearance is permitted, then you are looking for permutations, =PERMUT(17,7) = 98,017,920

Well that does help thanks! But i managed to get the answer earlier today!! Thanks anyway!!!!