If you’ve ever shuffled a deck of playing cards, you’ve most likely created a unique deck. That is, you’re probably the only person who has ever arranged the cards in precisely that order. Although ...

You can only split a pair if you are dealt a pair. Suits don’t matter. You need cards of equal rank. The odds of being dealt a pair are 5.88%, roughly 1 in 17 hands. The number of decks in play makes ...