Hi,

Two questions above about other cases:

- Do the odds change if Mr. Hall only opens another door if at that time you've picked the car?
= As it happens, they don't, but your strategy changes slightly. If Mr. Hall shows you a goat, then you know for sure that you have the car, so stick with it. If Mr. Hall does not show you a goat, then you know you yourself picked a goat. You'll now have to pick one of the other two doors for a car, but since he didn't open either of them, you'll only have a fifty/fifty chance of getting the right one. As it happens, this gives you the same two out of three odds the original question had.

- If you want a goat, and Mr. Hall opens a door showing one, what door should you pick?
= The door Mr. Hall just opened.


Bye
                                                                Mysha