There is a low railroad bridge in your town. One day you see a large truck stopped just before the underpass. When you asked the driver what has happened, the driver tells you that his truck is one inch higher than the indicated height of the opening. This is the only road to his destination.
What can he do to get through the underpass the easiest way?
A dragon and knight live on an island. This island has seven poisoned wells, numbered 1 to 7. If you drink from a well, you can only save yourself by drinking from a higher numbered well. Well 7 is located at the top of a high mountain, so only the dragon can reach it.
One day they decide that the island isn't big enough for the two of them, and they have a duel. Each of them brings a glass of water to the duel, they exchange glasses, and drink. After the duel, the knight lives and the dragon dies.
Why did the knight live? Why did the dragon die?
The devil's round table
You die and you meet the devil with a plea to send you to heaven.
Generous devil says he'll let you go to heaven if you beat him in a game he will tell you to play.
The devil sits you down at a round table. He gives himself and you a huge pile of quarters and says "we'll take turns putting quarters down, no overlapping allowed, and the quarters must rest on the table surface. The first guy who can't put a quarter down loses."
You were about to start playing, and the devil says that he'll go first. At this point you immediately interject, and ask if you can go first instead. You made this interjection because you are very smart, and you know that if you go first, you can guarantee victory.
Explain how you can guarantee victory.