## "Logic Riddles"

#### Two grandmothers

Two grandmothers, with their two granddaughters;

Two husbands, with their two wives;

Two fathers, with their two daughters;

Two mothers, with their two sons;

Two maidens, with their two mothers;

Two sisters, with their two brothers;

Yet only six in all lie buried here;

All born legitimate, from incest clear.  How?

A:
Two widows each had a son, and each widow married the son of the other and then each had a daughter

A hiker comes to a fork in the road and doesn’t know which way to go to reach his destination. There are two men at the fork, one of whom always tells the truth while the other always lies. The hiker doesn’t know which is which, though. He may ask one of the men only one question to find his way. Which man does he ask, and what is the question?

A:
Either man should be asked the following question: "If I were to ask you if this is the way I should go, would you say yes?" While asking the question, the hiker should be pointing at either of the directions going from the fork.

#### Fox, Goose and a Sack of Corn

A man went on a trip with a fox, a goose and a sack of corn. He came upon a stream which he had to cross and found a tiny boat to use to cross the stream. He could only take himself and one other – the fox, the goose, or the corn – at a time. He could not leave the fox alone with the goose or the goose alone with the corn. How does he get all safely over the stream?

A:
Take the goose over first and come back. Then take the fox over and bring the goose back. Now take the corn over and come back alone to get the goose. Take the goose over and the job is done!

#### Cogs, Tigs and Pabs

Some cogs are tigs.

All tigs are bons.

Some bons are pabs.

Some pabs are tigs.

Therefore, cogs are definitely pabs.— TRUE or FALSE?

A:
False. Some cogs may be pabs, but not definitely all of them.

#### The following sentence is false

The following sentence is false. The preceding sentence is true. Are these sentences true or false?

A:
Neither, it's a paradox. If the first is true, then the second must be false, which makes the first false? it doesn't work.

#### Explain how the tractor got there?

You are on an island in the middle of a lake. The lake is in a remote part of the country and there has never been a bridge connecting the island to the mainland.

Every day a tractor and wagon gives hay rides around the island. Puzzled as to how the tractor had gotten onto the island, you ask around and find out that the tractor was not transported to the island by boat or by air. Nor was it built on the island.

Explain how the tractor got there?

A:
It was driven over in winter when the lake was frozen.

#### Reading with the lights off

Sergi and Sally where sitting in their family room one night. While Sergi was watching T.V his wife Sally was reading. All of a sudden the power went out and Sergi decided to go to bed, but Sally kept on reading. With no use of artificial light, Sally kept on reading. How?

A:
Sally was blind... she was reading a book by Braille.

#### Filling the room

An old man wanted to leave all of his money to one of his three sons, but he didn’t know which one he should give it to. He gave each of them a few coins and told them to buy something that would be able to fill their living room. The first man bought straw, but there was not enough to fill the room. The second bought some sticks, but they still did not fill the room. The third man bought two things that filled the room, so he obtained his father’s fortune. What were the two things that the man bought?

A:
The wise son bought a candle and a box of matches. After lighting the candle, the light filled the entire room.

#### Murder suspects

A man was found murdered on Sunday morning. His wife immediately called the police. The police questioned the wife and staff and got these alibis:

The Wife said she was sleeping.

The Cook was cooking breakfast.

The Gardener was picking vegetables.

The Maid was getting the mail.

The Butler was cleaning the closet.

The police instantly arrested the murdered. Who did it and how did they know?

A:
It was the Maid. She said she was getting the mail. There is no mail on Sunday! (next day air and email doesn't count)

#### Sinking Ship

On a fine sunny day a ship was in the harbor. All of a sudden the ship began to sink. There was no storm and nothing wrong with the ship yet it sank right in front of the spectators eyes.

What caused the ship to sink?

A:
The "Submarine" Captain ordered the crew to dive.