Q: How long did the 100 Years War last?
A: 116 years, from 1337 to 1453.
Q: What was King George VI's first name?
A: Albert. He respected Queen Victoria's wish that no King of England go by the name of her deceased husband, Albert.
Q: What month of the year did the October Revolution in Russia occur?
A: November. They changed the calendar.
Q: How long did the 30 Years War last?
A: 30 years, of course! From 1618 to 1648.