Just 52 cards (weeks) with 4 suits (seasons) with 13 cards (weeks) in each season can be shuffled into 400000000000000000000000000000000000000000000000000000000000000000000 combinations. That’s 4 and 69 0’s.

The Pips (spots on a card) = the number of days in the year for trivia buffs (jacks count 11, Queens 12 and Kings 13).

Oh and here is a mind-fuddling bit of math that I perform with all the time and I’m still shocked that it always works: The Gilbreath Shuffle.