I am assuming we are using varient one. Unless varient 2 means that all the time he will get an empty door, then they are both the same. Anyways, Why do you still have a 1/3 chance of getting the prize? You have 2 doors left, one with a prize. The third door had nothing behind it, and should just be ignored. Maybe a picture might help?
Door1 Door2 Door3 You pick door2 Host opens door1 Door1 is empty [door1] Door2 Door3 You now have 2 doors to pick from: Door2(your first choice) or door3 This means your first choice has a 1/2 chance of being correct. Why does the first door still count in the chances? Peter Greenwood --- In [email protected], "Stefan Pochmann" <[EMAIL PROTECTED]> wrote: > > Shelley already mentioned it, but I'd like to point it out more > clearly. I'll give you a new variant of the riddle that points out an > important detail that can easily be misunderstood, leading to > different results. > > ----- > > There are three doors, one hides a car. You pick a door. The host > opens another and there's nothing. You choose between the two closed > doors and get what's behind it. Should you stay or switch? > > ----- > > Variant 1: The host knows what's behind the doors and when he opens > one, he deliberately picks an empty one. > > Variant 2: The host does *not* know what's behind the doors and when > he randomly opens one, it just happens to be empty. > > ----- > > Variant 1 is the original riddle with 2/3 probability getting the car > if you switch. Variant 2 is the new one I propose. What's your answer > for it? > > Cheers! > Stefan > ------------------------ Yahoo! Groups Sponsor --------------------~--> Get fast access to your favorite Yahoo! Groups. Make Yahoo! your home page http://us.click.yahoo.com/dpRU5A/wUILAA/yQLSAA/MXMplB/TM --------------------------------------------------------------------~-> Yahoo! Groups Links <*> To visit your group on the web, go to: http://groups.yahoo.com/group/speedsolvingrubikscube/ <*> To unsubscribe from this group, send an email to: [EMAIL PROTECTED] <*> Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
