k-man

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About k-man

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k-man's Activity

  1. k-man added an answer to a question How big is the ladder   

    Since no one has attempted to answer this yet...
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  2. k-man added an answer to a question Badminton   

    Given that John and Julie play on the same level and have 50/50 chance of winning any particular game, I agree with Bonanova that Julie has 50% chance of winning whatever series they choose to play. However, I think the OP is asking about the probability of Julie winning with the score 4:3 in the 7 game series vs. the probability of winning 5:4 in the 9 game series. Those probabilities are different...
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  3. k-man added an answer to a question Half-balls   

    Assuming that all heavy halves are identical (and therefore all light halves are identical too), so we can pair any heavy half with any light half to create a sphere.
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  4. k-man added an answer to a question Image puzzles   

    The first image
    No idea what the other 2 images mean. 
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  5. k-man added an answer to a question Cylinders   

    Looks like after the site update I can now upload Excel files, so here you go...
    Drum Decorator.xls
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  6. k-man added an answer to a question Cylinders   

    Welcome back, araver!
     

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  7. k-man added an answer to a question Cosmetic Surgery and the Worm   

     
    Looks like you're right, BMAD. I haven't taken my 9-long worm example far enough to see that the adversary cannot continue to maintain that pattern indefinitely as long as surgeon does the right thing.
     

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  8. k-man added an answer to a question Cosmetic Surgery and the Worm   

    Nice puzzle and title, BMAD.
     

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  9. k-man added an answer to a question Changing times   

     
    - Would you have change for half-cent?
    - Sure! How would you like it? Is all in hundred dollar bills ok?
     

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  10. k-man added an answer to a question Changing times   

    Considering that there is a $1 coin, the maximum is limited only by the availability of the $1 coins. Without using $1 coins, I don't see how you can have more than 99.
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  11. k-man added an answer to a question Changing times   

  12. k-man added an answer to a question A triangle defined by cevians   

    another proof
     
     

     
     
    1) draw 3 additional lines parallel to each cevian passing through the remaining vertices of 2 triangles.
    2) show that 6 other shaded triangles are mirror images of the green triangle and therefore have the same area
    3) show that every part of a shaded triangle that lies outside of the big triangle has an equal unshaded part inside the big triangle. Midpoints of big triangle's sides are points of symmetry.
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  13. k-man added an answer to a question Equilateral Triangle: Color and distance II   

    Ignore my previous post. I got my numbers mixed up.
     

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