To get a song out of your head, try doing something like a puzzle or Sudoku.
13
30 years ago, you could buy a lifetime, unlimited first-class travel pass with American Airlines for $250,000.
14
The 409 escalators in the London subway cover a distance every week which is approximately equivalent to several trips around the globe!
94
If you had 10 billion $1 notes and spent one every second of every day, it would require 317 years for you to go broke.
109
If you flip a coin ten times, the odds against its coming up with the same side showing each time are 1,023 to 1.
39
The first household refrigerators cost about $16,000, in today's money!
47
There are 365 steps on the front of the U.S. Capitol Building - one for every day of the year.
50