Title  Detail  Hits  Rating 

The wisest son  One day, a father went to his three sons and told them that he would die soon and he needed to decid... more>>>  
Black, red and grey  What is black when you buy it, red when you use it, and gray when you throw it away? ... more>>>  
Three consecutive days  Can you name three consecutive days without using the words Wednesday, Friday, or Sunday?... more>>>  
Monty Hall Problem  Suppose you're on a game show, and you're given the choice of three doors: Behind one door is a c... more>>>  
Two pieces of string  You have two pieces of string. If you ignite one string, it'll take exactly one hour to b... more>>>  
House Foundations  A blue house is made of blue bricks. A yellow house is made of yellow bricks. A r... more>>>  
Triangles  Which triangle has a bigger area: A. A triangle with sides measuring 300, 400, and... more>>>  
How would you weigh an aeroplane  A common brain teaser used in some job interviews... how would you weigh an aeroplane without sca... more>>>  
23 Prisoners  A warden meets with the 23 prisoners when they arrive at the prison. He tells them:... more>>>  
The beginning of eternity  The beginning of eternity. The end of time and space. The beginning of every end and the end of e... more>>>  
