Logical Puzzle and Brain Teasers

Logic Puzzle and Brain Teasers  

Deadly Choice Puzzle  

The Puzzle:

A man is caught on the King's property. He is brought before the King to be punished.

The King says, "You must give me a statement. If it is true, you will killed by lions. If it is false, you will be killed by trampling of wild buffalo."

But in the end, the King has to let the man go.

What was the man's statement?

Maths Pipe Time Brain Teaser

A large petrol tank has two inlet tubes (a large one and a small one) and one outlet tube. It takes 3 hours to fill the tank with the large inlet tube. On the other hand, it takes 6 hours to fill the tank with the small inlet tube. The outlet tube allows the full tank to be emptied in 9 hours.

What fraction of the tank (initially empty) will be filled in 0.64 hours if all three tubes are in operation? Give your answer to two decimal places (e.g., 0.25, 0.5, or 0.75).

  Hospital Puzzle  

The Puzzle:

A Man carries his son into the hospital because his son has a nail in his foot. The Surgeon then walks in and says "I cannot operate on this boy as he is my son".

What is going on here?

Farmer Crosses River Puzzle  

The Puzzle:

A farmer wants to cross a river and take with him a wolf, a goat, and a cabbage. There is a boat that can fit himself plus either the wolf, the goat, or the cabbage. If the wolf and the goat are alone on one shore, the wolf will eat the goat. If the goat and the cabbage are alone on the shore, the goat will eat the cabbage.

How can the farmer bring the wolf, the goat, and the cabbage across the river?

Arithmetic Brain Teaser

This odd little problem in domestic arithmetic was sprung by the cook upon Mrs. Smith when she wanted to know what the grocer charged for such small eggs.

'I paid twelve cents for the lot,' replied Bridget, 'but I made him throw in two extra ones, because they were so little, and you see that made them cost one cent a dozen less than his first asking price!'

Tell now how many eggs she received for her twelve cents?

Heads Feet Mathematical Problem

In a stable there are men and horses. In all, there are 22 heads and 72 feet. How many men and how many horses are in the stable?

Girl and Boy Puzzle  

The Puzzle:

A boy and a girl are talking.

"I am a boy" - said the child with black hair.

"I am a girl" - said the child with white hair.

At least one of them lied. Who is the boy and who is the girl?

Knights and Knaves Puzzle  

The Puzzle:

There are three people (Alex, Brook and Cody), one of whom is a knight, one a knave, and one a spy.

The knight always tells the truth, the knave always lies, and the spy can either lie or tell the truth.

Alex says: "Cody is a knave."
Brook says: "Alex is a knight."
Cody says: "I am the spy."

Who is the knight, who the knave, and who the spy?

  Math Handshake Riddle

At a party, everyone shook hands with everybody else. There were 66 handshakes. How many people were at the party?

Missing Fish Puzzle  

The Puzzle:

Two fathers took their sons fishing.

Each man and son caught one fish, but when they returned to camp there were only 3 fish. How could this be?

(None of the fish were eaten, lost, or thrown back.)