6. If you shuffled a deck of 52 cards, nobody in the world could repeat your combination.
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 possible combinations of 52 cards in the deck. This is why the chances of repeating the same combination twice are incredibly low.