Gavin Scott wrote:
>
> Three contestants, three doors.  Each contestant picks a door.
>
> Monty opens one (guaranteed to be non-winning) door, and eliminates the
> player who chose that door.
>
> Now there are two contestants left who each have an unopened door.
>
> Each appears to be in the same position as the contestant in the original
> problem.  Each has chosen a door and seen one of the remaining doors opened.
>
> If both are attentive HP3000-L readers, shouldn't they *both* think that
> they should switch to the *other's* door in order to increase their chances
> of wining from 1/3 to 2/3?

In what order did they pick the door?
The odds change as the choices are eliminated.

>
> Should they trade doors or not?
>
> G. :-)


--
Richard L Gambrell,
Database Administrator and
Consultant to Computing Services at UTC

** UTC business:
  University of Tennessee at Chattanooga
  113 Hunter Hall, Dept. 4454
  615 McCallie Ave., Chattanooga, TN 37403-2598
  fax: 423-755-4025
  phone: 423-755-4551       email: [log in to unmask]

** other business or private:
  voice mail/cell phone: 423-432-5122  email: [log in to unmask]