Stats/Math Problems and Riddles #2

General
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  1. can be solved with a morris counter.
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or can it?

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my answers are wrong, but definiteley belong to the class of "good enough"

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Arbitrary

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oh i think i got it

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its not a math solution tho its like a logic one

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if ur allowed infinite flips i have a solution

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which i assume you are

so basically regardless of the probability of heads or tails, the probability of heads and then tails is the same as tails and then heads.

so u just keep flipping until you get one of those two and call heads tails or tails heads.

I guess in theory you could just never get it so there might be a cleaner solution. A traditional coin flip is different in that you're guaranteed an outcome every time so it would be cool if there were a solution that also had that.

1 Like
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A+

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if you know the weight for heads, you can flip n times and have each person guess "over/under" ahead of time.

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i still like my prf/hash solution.

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i googled: randomness extractor

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2 is THOROUGHLY solved.

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1 best solution: 3 rolls

can anyone do better

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i REFUSE to believe that 2 rolls (4 bits) can't satisfy 3 bits of entropy.