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kman added an answer to a question How big is the ladder
Since no one has attempted to answer this yet...

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kman 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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kman added an answer to a question Halfballs
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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kman added an answer to a question Image puzzles
The first image
No idea what the other 2 images mean.

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kman 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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kman added an answer to a question Cylinders
Welcome back, araver!

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kman added an answer to a question Half as old as my brother

kman added an answer to a question Cosmetic Surgery and the Worm
Looks like you're right, BMAD. I haven't taken my 9long 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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kman added an answer to a question Cosmetic Surgery and the Worm
Nice puzzle and title, BMAD.

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kman added an answer to a question Changing times
 Would you have change for halfcent?
 Sure! How would you like it? Is all in hundred dollar bills ok?

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kman 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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kman added an answer to a question Changing times

kman 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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kman 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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