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  1. #1
    Junior Member
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    Dec 2006
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    20

    can u solve it

    In a room there are 3 bulbs and outside the room there are respective switches but in irrespective manner.One can switch on and get in only once.How would you find respective swiches for bulbs.


  2. #2
    Expert Member
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    Dec 2006
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    204

    Re: can u solve it

    turn on the first switch for a while and off it and switch on the second one.
    Then get into the room.
    the one which is glowing is for the second switch, the one which is hot is for the first switch and the other one is for the third switch.

    Last edited by Barbie; 01-12-2007 at 05:47 AM.

  3. #3
    Contributing Member
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    Dec 2006
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    77

    Re: can u solve it

    its pretty simple..u put on a switch and wait for sometime.switch that off...
    put the second switch now..
    Get into the room..
    Now the bulb glows for the recent switch.made on..
    the warm bulb wud correspond to the switch pressed first.

    The third switch wud correspond to the unglowing bulb!!

    [B][B][I][COLOR="Blue"][FONT="Times New Roman"]Regards,
    Raju[/FONT][/COLOR][/I][/B][/B]

  4. #4
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    Re: can u solve it

    good job barbie


  5. #5
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    Re: can u solve it

    u r right raju


  6. #6
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    139

    Re: can u solve it

    Hi,

    simple..u put on a switch and wait for sometime.switch that off...
    put the second switch now..
    Get into the room..
    Now the bulb glows for the recent switch.made on..
    the warm bulb wud correspond to the switch pressed first.

    The third switch wud correspond to the unglowing bulb

    Regards

    Nikhil Rattan


  7. #7
    Junior Member
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    Apr 2006
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    1

    Re: can u solve it

    how can i post a new topic?


  8. #8
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    Sep 2006
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    Re: can u solve it

    Hi Rohit,

    if you want to post a new one in this brainteaser forum then use the following URL:

    http://www.geekinterview.com/talk/brainteasers/

    Click "ask" button in that page and type your new post and then click submit button....

    We expect some good puzzles from you...

    Have a fun...

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


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