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| bio | website | benalpert.com |
|---|---|---|
| location | United States | |
| age | 20 | |
| visits | member for | 2 years, 10 months |
| seen | yesterday | |
| stats | profile views | 347 |
Khan Academy / Carnegie Mellon
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Jul 25 |
accepted | Probability that two people see each other at the coffee shop |
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Jul 25 |
comment |
Probability that a stick randomly broken in two places can form a triangle All right. That's basically what I did to check your answer; I guess I was just thrown off by your change in names. Thanks for the clarification. |
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Jul 25 |
revised |
Probability that a stick randomly broken in two places can form a triangle deleted 54 characters in body; added 8 characters in body |
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Jul 25 |
asked | Probability that two people see each other at the coffee shop |
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Jul 25 |
comment |
Probability that a stick randomly broken in two places can form a triangle I'm actually confused as to how you arrived at 1/4 using your method. If you use the three inequalities from my answer (below), only 1/8 of the unit square satisfies all three. This doesn't work out for essentially the same reason as the Monte Carlo simulation, except this time, both x and y are chosen uniformly and 1-x-y is forced into a tiny range of values. How'd you get 1/4? |
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Jul 25 |
comment |
What property of certain regular polygons allows them to be faces of the Platonic Solids? Oh, I misread your question completely! I thought you were asking, "Why is it that only regular polygons can be faces of the Platonic solids?". |
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Jul 25 |
comment |
Probability that a stick randomly broken in two places can form a triangle Thanks! I was about to go to sleep but then I stumbled upon your question and the opportunity to solve it and figure out the mystery was just too great to pass up. :P |
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Jul 25 |
revised |
Probability that a stick randomly broken in two places can form a triangle deleted 9 characters in body |
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Jul 25 |
answered | Probability that a stick randomly broken in two places can form a triangle |
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Jul 25 |
comment |
Your favourite maths puzzles V pnyphyngrq gur ahzore bs cbffvovyvgvrf sbe obgu, naq vg ybbxf gb zr yvxr gurl'er gur fnzr. V'z fher gurer'f n terng rkcynangvba ohg V'z abg frrvat vg evtug abj. |
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Jul 25 |
comment |
Your favourite maths puzzles Kaestur Hakarl: That's the fastest way that I know of. |
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Jul 25 |
revised |
Balance chemical equations without trial and error? deleted 73 characters in body |
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Jul 25 |
comment |
Balance chemical equations without trial and error? Just edited; better now? |
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Jul 25 |
revised |
Balance chemical equations without trial and error? added 270 characters in body |
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Jul 24 |
awarded | Commentator |
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Jul 24 |
comment |
How many knight's tours are there? Tomer Vromen: I'd repost that as an answer. |
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Jul 24 |
comment |
Why is the derivative of a circle's area its perimeter (and similarly for spheres)? This doesn't explain why the coefficients match up. |
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Jul 24 |
answered | Balance chemical equations without trial and error? |
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Jul 23 |
asked | Counting how many hands of cards use all four suits |
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Jul 23 |
comment |
Your favourite maths puzzles If the size is fixed, it's easy to create a tiling that prevents finding a monochromatic triangle, but if I remember correctly, the answer is unknown in the general case. |
