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How Many Shuffles Do You Really Need to Randomize Your Deck? artwork
Science & Medicine

How Many Shuffles Do You Really Need to Randomize Your Deck?

Quanta Science Podcast by Quanta Magazine

Jul 14, 202629:41Science & Medicine

In 1992, mathematicians Dave Bayer and Persi Diaconis proved that seven riffle shuffles are enough to shuffle a deck of cards — but only if you can cut your deck with precision. Decades later, a new proof has finally ext...