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Thread: Arrange the coins in such a way that each coin should touch the other

  1. #1
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    Arrange the coins in such a way that each coin should touch the other

    Hi i am new member of geekinterview and i am very glad to be here. Recently i gone through infosys campus recruitment interview. The question i was asked is something like this:

    I was given five(5) coins and asked to arrange the coins in such a way that each coin should touch the other four coins. i was unable to arrange. Can anyone help me in this regard?

    Thanking You...


  2. #2
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    Re: Arrange the coins in such a way that each coin should touch the other

    I do not quite understand your question. Can you clarify it?


  3. #3
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    Re: Arrange the coins in such a way that each coin should touch the other

    Quote Originally Posted by iami007 View Post
    I do not quite understand your question. Can you clarify it?
    hi my question is "how do you arrange the 5 coins in such a way that each coin should touch other four?"
    something like this:
    out of three coins if a arrange the coins triangular then each coin touches other two's.
    similarly arrange the five coins.


  4. #4
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    Re: Arrange the coins in such a way that each coin should touch the other

    I think you are not understand his problem..If he told he want to arrange four in that manner then i have a solution...Look at the below image..

    In that image all the four coins are touched with other three coins..In that way he want to acheive five coins.

    puzzle.jpg

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


  5. #5
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    Re: Arrange the coins in such a way that each coin should touch the other

    it is possible i have done that .

    you can check it . in picture it is not touching but in real it touched .

    Attached Files Attached Files

  6. #6
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    Re: Arrange the coins in such a way that each coin should touch the other

    from your arangement i am not sure if both the red coins are touching each other at all.


  7. #7
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    Re: Arrange the coins in such a way that each coin should touch the other

    Hi govindaraj123,

    In your attachment, "Pink color coin didn't touch the opposite pink color coin". So it is touch only other three coins..not four coins...

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


  8. #8
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    Re: Arrange the coins in such a way that each coin should touch the other

    Now you can check one more time .

    This time i drew somewhat correctly . You don't put coins on table or anyohter .You can do it in air . You see attachement .

    Top 2 coins and middle 2 coins inclined little then at a particular point
    each coin touch other four . Top 2 coins are not placed on base but i inclined those coins .

    Attached Files Attached Files

  9. #9
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    Re: Arrange the coins in such a way that each coin should touch the other

    Hi,

    The Base level coin never touch the third level coin if all the coins have the same size....Please work out on this...

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


  10. #10
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    Re: Arrange the coins in such a way that each coin should touch the other

    Quote Originally Posted by psuresh1982 View Post
    Hi,

    The Base level coin never touch the third level coin if all the coins have the same size....Please work out on this...

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

    yes yes i mistaken suresh , i tried with two reupee coins . that onle i thought wrong


  11. #11
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    Re: Arrange the coins in such a way that each coin should touch the other

    check the attached doc.

    Green and Red coin touching at a point in tilted position
    Yellow coins in between red and green coin, each touching other three
    Straight line is the fifth coin which is in straight position touching other 4

    Try it practically, I did.

    Attached Files Attached Files

  12. #12

    Re: Arrange the coins in such a way that each coin should touch the other

    the answer is that, you cannot arrange it......(conditon is that, it should be in one plane only but he didnt mentioned)


  13. #13
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    Re: Arrange the coins in such a way that each coin should touch the other

    It is quite simple,

    i guess it is easy it they have asked for three right, ok then start arranging first three coins touching each other, keeping them in a triangle touching each other all three, now put this tirangle in between other two, still the problem not solved as the other two coins not touching each other ok right, now clip the two coin edges and put the triangle in between them, thus the problem is solved

    ther r so many things to assume here as this is possible only with not too big coin, not too small coins, as if the coin size is too big, you cant arrange it for three itself in a triangle, and if they r too small we cant acheive

    Last edited by Ayaz Alam; 03-25-2009 at 07:52 AM.

  14. #14
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    Post Re: Arrange the coins in such a way that each coin should touch the other

    if u have threee coins than make a traingle with them than its surface surely touch each other


  15. #15
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    Re: Arrange the coins in such a way that each coin should touch the other

    Quote Originally Posted by amritlal View Post
    Hi i am new member of geekinterview and i am very glad to be here. Recently i gone through infosys campus recruitment interview. The question i was asked is something like this:

    I was given five(5) coins and asked to arrange the coins in such a way that each coin should touch the other four coins. i was unable to arrange. Can anyone help me in this regard?

    Thanking You...
    Here is the solution.

    7-6-2010 2-50-15 PM.png

    Regards,
    Brijesh Jain
    ---------------------------------------------------------
    Connect with me on Skype: jainbrijesh
    Google Plus : jainbrijeshji

  16. #16
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    Re: Arrange the coins in such a way that each coin should touch the other

    The answer is it is not possible to make all the 5 touch each other. Max 4 can be made touch each other.


  17. #17
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    Re: Arrange the coins in such a way that each coin should touch the other

    Quote Originally Posted by mrinalinis View Post
    check the attached doc.

    Green and Red coin touching at a point in tilted position
    Yellow coins in between red and green coin, each touching other three
    Straight line is the fifth coin which is in straight position touching other 4

    Try it practically, I did.
    yep, I tried, that the best possible answer. All 5 of them touch each other perfectly


  18. #18
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    Re: Arrange the coins in such a way that each coin should touch the other

    Nice Question!


  19. #19
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    Re: Arrange the coins in such a way that each coin should touch the other

    absolutely correct


  20. #20
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    Re: Arrange the coins in such a way that each coin should touch the other

    i think this can be d solutionUntitled.jpg


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