How Unique Is A Random Shuffle? - Quantum Base
quantumbase.com
We discuss how unique card decks are, and how it is almost scientifically impossible that a random shuffle will match somebody elses.
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The original was posted on /r/todayilearned by /u/strwht12 on 2025-07-28 05:07:05+00:00.

Original Title: TIL if you shuffle a pack of cards, it’s likely that you have come up with an ordering of cards that is unique in human history. In fact in a 52 pack of card, there are 80,658,175,170,943,878,571,660,636,856,403,766,975,289,505,440,883,277,824,000,000,000,000 possibilities.