Coins usually survive in circulation for about 30 years.
66
The only king without a moustache in a deck of cards is the king of hearts.
63
The 409 escalators in the London subway cover a distance every week which is approximately equivalent to several trips around the globe!
94
We forget why we have entered a room because passing through doors creates an ‘event boundary’ causing the brain to file away what we were just thinking about.
26
There are 2,500,000 rivets in the Eiffel Tower.
98
There are 635,013,559,599 possible hands in a game of bridge.
39
There are 170,000,000,000,000,000,000,000,000 ways to play the ten opening moves in a game of chess.
266
A portion of the water you drink has already been drunk by someone else, maybe several times over.
170