probability, page-7

  1. 168 Posts.
    The initial probability of success is, of course, one-third. Opening one empty box, after the initial selection has been made, does not change that initial probability. It merely provides the information that the probability of success is now one-half. This is not a justification for switching the choice, as the $100 note is equally likely to be in either remaining box.

    Regards, Serendip
 
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