Thursday, July 31, 2008

Ali and the 8 loaves Puzzle

Ali and the 8 loaves Puzzle

There were two men having a meal. The first man brought 5 loaves of bread, and the second brought 3. A third man, Ali, came and joined them. They together ate the whole 8 loaves. As he left Ali gave the men 8 coins as a thank you. The first man said that he would take 5 of the coins and give his partner 3, but the second man refused and asked for the half of the sum (i.e. 4 coins) as an equal division. The first one refused.

They went to Ali and asked for the fair solution. Ali told the second man, "I think it is better for you to accept your partner's offer." But the man refused and asked for justice. So Ali said, "then I say that who offered 5 loaves takes 7 coins, and who offered 3 loaves takes 1 coin."

Can you explain why this was actually fair?

Sunday, July 27, 2008

Railroad Bridge Puzzle

Railroad Bridge Puzzle
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?

Sunday, July 13, 2008

Devil's Round Table Puzzle

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.

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