I Had a freind who wouldnt believe this no matter how often I explained the maths to him so he set up spreadsheet to test it out. Very easy to do and confirmed what the maths tells you - you should switch!
Duncan ----- Original Message ----- From: "aznseashell" <[EMAIL PROTECTED]> To: <[email protected]> Sent: Sunday, December 25, 2005 7:04 AM Subject: [Speed cubing group] Re: (Off topic)3 doors... Haven't we had this dicussion before? Or was it in another cubing group? The game is set up so that if you switch, a winning choice would become a losing choice and vice versa. In the beginning you had a 1/3 chance of winning and 2/3 chance of losing. Staying with your choice doesn't change your odds of winning (the host will always be able to show you a door with nothing behind it no matter which door you picked), but switching will turn your probabability of winning to 2/3. If my explanation makes no sense, consider the situation with 100 doors and one door with a prize. You pick a door, and the host shows you 98 doors with nothing behind them. Now it's much more obvious that you should switch, right? Shelley --- In [email protected], "richy_jr_2000" <[EMAIL PROTECTED]> wrote: > > It is counter intuitive, but if you are in this situation, your > chances would be better to switch to the other door. It's actually > quite interesting. > > -Richard > > --- In [email protected], Pedro > <[EMAIL PROTECTED]> wrote: > > > > Ok, this is off topic, but is interesting... > > > > (please forgive if I make some mistake on the english...) > > Suppose you are at a TV show, where you have 3 doors. 1 of the > doors has a car, and the other 2 don't have anything. So, the show > presenter asks you to choose a door. So, you choose, but he doesn't > open your choosen door. He opens an empty door. Then, he makes a > question: do you want to continue with your first choice or change to > the other door? > > > > What do you do? > > What situation gives you more chances of winning? > > > > Think about it... > > > > Pedro > > > > > > --------------------------------- > > Yahoo! doce lar. Faça do Yahoo! sua homepage. > > > > [Non-text portions of this message have been removed] > > > Yahoo! Groups Links ------------------------ 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/
