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Published online 4 October 2000 | Nature | doi:10.1038/news001005-8
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Shuffling: what's the deal?
Philip Ball finds out how many times you really need to shuffle that deck of cards to rule out any chance of dodgy dealing.
Two mathematicians hit the headlines in 1990 when they claimed that it took seven shuffles to make a pack of cards fully random, with no vestige of its original card order. Now comes a challenge to that claim.
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