Results 1 to 2 of 2

Thread: Two Theoreticians.....

  1. #1
    Contributing Member
    Join Date
    Sep 2006
    Answers
    962

    Two Theoreticians.....

    Two information theoreticians, X and Y, perform a trick with a shuffled deck of cards, jokers removed. X asks a member of the opposite audience to select five cards at random from the deck. The opposite audience member passes the five cards to X, who examines them, and hands one back. X then arranges the remaining four cards in some way and places them face down, in a neat pile.

    Y, who has not witnessed these proceedings, then enters the room, looks at the four cards, and determines the missing fifth card, held by the audience member. How is this trick done?

    Note: The only communication between X and Y is via the arrangement of the four cards. There is no encoded speech or hand signals or ESP, no bent or marked cards, no clue in the orientation of the pile of four cards...


    ----------------------
    suresh


  2. #2
    Contributing Member
    Join Date
    Sep 2006
    Answers
    962

    Re: Two Theoreticians.....

    Hi Friends,

    Try to find answer using the following hint.

    HINT: In any group of five cards, at least two must be of the same suit. (This hint is designed to lead to one (particularly elegant) solution. There are other solutions to which it may not apply.)

    --------------------
    suresh

    Last edited by psuresh1982; 07-25-2007 at 02:55 AM.

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •  
About us
Applying for a job can be a stressful and frustrating experience, especially for someone who has never done it before. Considering that you are competing for the position with a at least a dozen other applicants, it is imperative that you thoroughly prepare for the job interview, in order to stand a good chance of getting hired. That's where GeekInterview can help.
Interact