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Oct
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revised Probability that a stick randomly broken in two places can form a triangle
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Oct
18
comment Probability that a stick randomly broken in two places can form a triangle
@hlapointe If the first break gives a stick with length $x$, then the remaining length is $1-x$. Splitting that randomly is the same as multiplying by a random number $y$ between $0$ and $1$, so we get $y(1-x)$.
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comment How can you prove that the square root of two is irrational?
If $p = 2^k m$ where $m$ is odd, then $p^2 = 2^{2k} m^2$ (where $m^2$ is still odd).
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revised Proof that $n^3+2n$ is divisible by 3
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revised Balance chemical equations without trial and error?
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