Resourceful postman

When the postman arrived at the Smith home to deliver mail through a slot in the front door, he was surprised to find the...

Measuring Water puzzle

You had an infinite supply of water and a 3 and a 5 - liter bottles You would to measure exactly 4 liters of water. How...

The Importance of a Good Problem Statement

A metal rod stirred the liquid molten metal. However, at the same time it was collapsing and polluting the metal. The solution to the problem...

“AHA and” HAHA” reactions (a)

1. What has two hands and a face, but no arms and legs? 2. What has a neck, but no head? 3. Why did the man...

Resourceful detective

A man murders his wife with a knife in their car. He throws her out of the car being careful not to leave any...

Trouble-shooter’s solution

A well-known shoe company has established the production of sneakers in one of the poor countries of Africa. However, over time, the owners noticed...

Round or square?

This is frequently asked interview puzzle Why is it better to have round manhole covers than square ones?A round manhole cover cannot fall through its...

How to make a million dollars by simple solution

In the States there were two large firms engaged in the publication of yellow pages every month. Many office workers bought two directories at...

Pilot’s decision in an emergency situation

The pilot of the seaplane had an urgent need to speed up on the surface of the lake and fly up. Suddenly, the heads of...

Сhange the terms

A king, in order to select which one of his two sons will inherit his fortune, decides to have his sons compete in a...

Successful detection of a crime

The detective opened the door to the Company director's office and surveyed the scene. director's head lay on the desk in a pool of blood....

The detective who knew the laws of physics

Detective walked into a room with no windows and found a dead man, who  was hanging from the ceiling, which is 12 feet above...