10/4/2016 – 10/6/2016
o If the trip can be completely finished in “K” different ways then we need to add
all of the choices together from those “K” ways. That’s all of your possible
choices to get your trip done.
Multiplication rule (stops during trip)
o If the trip has “M” stops, i.e. only after visiting all of the “M” stops you can finish
the trip once, then the product of all choices in those “M” stops is number of
your possible choices to get your trip done.
The factorial of N
o N! =