3 Issam has 11 different CDs, of which 6 are pop music, 3 are jazz and 2 are classical.
- How many different arrangements of all 11 CDs on a shelf are there if the jazz CDs are all next to each other?
- Issam makes a selection of 2 pop music CDs, 2 jazz CDs and 1 classical CD. How many different possible selections can be made?