Critical Thinking Puzzles

One absentminded ancient philosopher forgot to wind up his only clock in the house. He had no radio, TV, telephone, internet, or any othe...

A merchant had a 40 kg measuring weight that broke into four pieces as the result of a fall. When the pieces were subsequently weighed, i...

The Hilton Hotel reserves all its 101 rooms for travelers and each guest is assigned a room in advance. The first guest arrives but has f...

If 7 - 3 = 10124 6 + 3 = 3279 5 – 2 = 763 11 + 2 = 92613 Then, 15 - 3 =?

Which of the statements in the box are true?

An ant is placed at one corner of a wire frame in the shape of a cube. At the diagonally opposite corner is a piece of sugar. The ...

How many people must be there if all but 2 are named Smith, all but 2 are named Jones, and all but 2 are named Wilson?