Packs of playing cards are sold just about everywhere, and nearly everyone has played a card game or two in their life. There's go fish, poker, blackjack, and literally hundreds of others.
But did you know there are actually a bunch of hidden secrets in every deck of cards? The company that originally designed them made sure to include some cool traits, and they're all fascinating.
Here are 10 secrets you probably never knew about a simple deck of playing cards. You'll never look at those 52 pieces of laminated cardboard the same way ever again!