Posted by B.B. on Thursday, August 6, 2009 at 4:19pm.
How many ways can 9 cars be parked in a row of 9 parking spaces?
Answer: 81 ways
Is this correct?
Thanks for your help.

Math  bobpursley, Thursday, August 6, 2009 at 4:29pm
No. I would look at the factorial.

Math  B.B., Thursday, August 6, 2009 at 5:48pm
I think that I see what I did wrong.
Should it be 9*8*7*6*5*4*3*2*1?
Thanks.