*****Did you know you can see all the Google Doodles from past days? If you didn't know it, Google puts up interesting 'doodles' almost every day, celebrating someone's life or holiday. Here's a list of those things: Google Doodles
You should shuffle a deck of cards 7 times if using the 'random riffle' shuffle. (The random riffle shuffle is modeled by cutting the deck binomially and dropping cards one-by-one from either half of the deck with probability proportional to the current sizes of the deck halves.)
If you use the 'overhand shuffle,' you need to do it 2500 times to make it truly random. (Shown here: Overhand Shuffle) See Seven Shuffles to find out more.
From 100 Random Fun Facts:
- Otters sleep holding hands
- If you were to remove all the empty space from the atoms that make up every human on earth, the entire world population could fit into an apple. Trippy!
If the amount of water in your body is reduced by just 1%, you'll feel thirsty.
If it's reduced by 10%, you'll die.