Question 375958
There are 17 P 9 = 17!/(17-9)! = 17!/8! = 17*16*15*14*13*12*11*10*9 = 8821612800 different ways to arrange 17 CDs into 9 positions



However, there is only one way to get them into alphabetical order (assuming each CD has a unique name)



So the probability that the rack ends up in alphabetical order is {{{1/8821612800}}} which is approximately 0.00000000011336 (ie it's a very small chance it's going to happen)