Happy HourDiscrete Mathematics Level 3
It is happy hour on Friday. Sue, Sam, Pete, Calvin, David and Bradan are fooling around at their office desks. There are 6 desks, which correspond to where they sit during the day. How many ways are there for them to occupy a seat at the various desks, such that at most 1 of them is in the correct spot?
Details and assumptions
Each person sits at 1 desk. Each desk only allows for 1 person.