Double Headed Coin - Brainteaser
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Double Headed Coin
Probability
Medium
Reported at: 4 firmsAkuna Capital · Maven Securities · Tower Research Capital
+ 1 more
Akuna Capital, Maven Securities, Tower Research Capital, SIG
In a bag, there are 19 fair coins and one double-headed coin. If a coin is picked uniformly at random from the bag, how many times must this coin show heads consecutively for us to be at least 95% certain that it's the double-headed coin?
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