1. 04-15-15 04:55 PM #1
    SharpAngles
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    So when is Cheryl's birthday?



    http://www.bbc.com/news/world-asia-32297367

    Nice little logic puzzle that reminds me of the process we use as poker players when dealing with imperfect information and putting an opponent on a hand.

    Anyone able to get it without cheating?
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  2. 04-15-15 09:52 PM #2
    Jimmy Proffett
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    I didn't get it.... I have a question about it but don't want to spoiler the answer.
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  3. 04-15-15 10:07 PM #3
    ShogunRua
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    It took me a few minutes, but I eventually got there. Interesting little puzzle, was fun.
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  4. 04-16-15 12:56 AM #4
    Jimmy Proffett
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    What I don't understand: I know how the 1st two dates were eliminated, but why does that eliminate those entire months?
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  5. 04-16-15 10:47 AM #5
    ShogunRua
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    Quote Originally Posted by Jimmy Proffett View Post
    What I don't understand: I know how the 1st two dates were eliminated, but why does that eliminate those entire months?
    Because those were the only 2 months that had 18 or 19 listed. If Cheryl's birthday ended in either of those numbers, then Bernard would know 100% that her bday was on May 19th/June 18th. But since he 'does not know', you can automatically eliminate both months.
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  6. 04-16-15 11:55 AM #6
    daneblazer
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    I picked the right date, but only because it looked like he had circled & erased it
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  7. 04-16-15 01:31 PM #7
    Auto Donk
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    my f'n head hurts now.... thanks!
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  8. 04-16-15 01:36 PM #8
    SharpAngles
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    Quote Originally Posted by daneblazer View Post
    I picked the right date, but only because it looked like he had circled & erased it
    Hadn't noticed that.

    Fukin nice angle there, you must hold your own at the tables


    And and a hint for anyone who can't get it.....

    Start with what it can't be and work back towards the only possible date. It took me a minute or two to work it out once I understood the first statement.
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  9. 04-16-15 02:52 PM #9
    yisman
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    reminds me of the logic puzzles on the LSATs

    hardest part of the test because they take time, so it's hard to finish the section in the allotted time period.
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  10. 04-16-15 04:37 PM #10
    Jimmy Proffett
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    Quote Originally Posted by ShogunRua View Post
    Because those were the only 2 months that had 18 or 19 listed. If Cheryl's birthday ended in either of those numbers, then Bernard would know 100% that her bday was on May 19th/June 18th. But since he 'does not know', you can automatically eliminate both months.
    Ohhhhhhh, just had the a-ha moment; only after having it explained to me and thinking about it for an hour
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