If Alice tosses a coin until she sees a head followed by a tail, and Bob tosses a coin until he sees two heads in a row, then on average, Alice will require four tosses while Bob will require six tosses (try this at home!), even though head-tail and head-head have an equal chance of appearing after two coin tosses.Have any of my readers ever heard of this? Search as I might, I've found no reference to anything suggesting unequal probability of head-tail versus head-head. At the moment I'm assuming that the article's author just misunderstood something she heard...
Monday, March 14, 2016
Prime surprise... I ran across this interesting article about a surprising property of sequential prime numbers. But even more interesting to me is this piece in the article, which seems obviously wrong to me:
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