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  • Funny Puzzle

    rishi0922

    Member

    Updated: Oct 25, 2024
    Views: 955
    A professional college has a strange principal. On the first day, he & his students perform an odd opening day ceremony:

    There are one thousand lockers and one thousand students in the college.

    The principal asks the first student to go to every locker and open it.

    Then he has the second student go to every second locker and close it.

    The third goes to every third locker and, if it is closed, he opens it, and if it is open, he closes it.

    The fourth student does this to every fourth locker, and so on.


    Then, the Question.....

    After the process is completed with the thousand students, how many lockers are open?
    0
    Replies
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Replies

  • bharathpb

    Member • Jul 17, 2010

    Finnaly you get a principal r@gg!ng studetns...
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  • Somi

    Member • Jul 17, 2010

    i have a guess!! 898???
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  • rishi0922

    Member • Jul 18, 2010

    Hey bharathpb how you thought this type of answer, this a tricky question guy not the question to make a fool.
    And by the way principal dosen't take ragging.
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  • rishi0922

    Member • Jul 18, 2010

    And somi try it again.
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  • bharatbhushan198

    Member • Jul 26, 2010

    is 500 correct?
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  • silverscorpion

    Member • Jul 27, 2010

    Only the lockers numbered
    1,4,9,25,36,49,64,81,100,121,144,169,196,225,256,289,324,361,400,441,484,529,576,625,676,729,784,841,900,961
    will be open.

    These are the square numbers, and only those will be open at the end. U can check..
    So, there will be 31 lockers open finally..
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  • rishi0922

    Member • Jul 31, 2010

    yes silverscorpion you are right.
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  • vinsocorp

    Member • Aug 7, 2010

    Its gr8 question to solve..
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  • marustech

    Member • Aug 7, 2010

    i dont get .....so i need answer pls
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