dahcrap, thanks for the answer, but could you elaborate a bit? Unfortunately, I'm one of those people where if I don't know how to do something I really don't know how to do it and kind of need it spelled out for me.
Especially since Comb. & Perm. are really a struggle for me, I'm trying to collect as many good problems and answers as possible. Thanks!
This is actually a simple question though worded in a convulted manner. Just find the number of ways to select 4 people from a group of 8. This is 8C4. Now multiply the remainder by 4C4. Now lets take another example. How many ways can we form 3 groups of 4 from a group of 12 people ?
The answer is First choose 4 for the first group from 12. This 12C4. NOW CHOOSE the second group from the remaining 8. This give 8C4. Now finally choose the 4 from the remaining 4. This 4C4
So the answer is 12C4*8C4*4C4. Got it ?