1. According to the CIA World Factbook, which are the only 3 countries in the world that do not use the metric system?

2. The name of which company means "Leave luck to heaven" in Japanese?

3. The price of every DVD produced includes a small royalty payment to which company?

4. US patent No. 5,255,452 covering a "system for allowing a shoe wearer to lean forwardly beyond his center of gravity by virtue of wearing a specially designed pair of shoes" was granted in 1993 to 3 people : Michael L. Bush, Dennis Tompkins and who?

5. Which cartoon character was named after a scat-style phrase at the end of Frank Sinatra's song 'Strangers in the Night'?

For the answers, please visit: ten things i didn't know until last week.