1. Biased Coin Puzzles.
- Author
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Winkler, Peter
- Subjects
- *
COINS , *PUZZLES , *REAL numbers - Abstract
That doesn't work if the coin is fair, because the probability that all the flips are the same is only HT ht , not the required HT ht . All coins are biased; that is, when you flip one, the probability that it will come up heads is never exactly 50%. For each of the 100 flips, select a threshold HT ht uniformly at random from [0, 1]. But that certainly favors coin I A i , because if coin I A i is first to flip heads, the experiment ends, and coin I B i might have been about to flip heads itself but wasn't given a chance. [Extracted from the article]
- Published
- 2021
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