Critical Thinking Puzzles

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?

I have two 10 litre bottles full of wine and 2 other empty bottles of 5 and 4 litres. I want to fill 3 litres in each empty bottles witho...

Ram and Mohan are friends, having their own shop, side by side. Once Shyam came to Ram's shop, asked for a water bottle, that costs 2...

A person drives with constant speed and after some time he sees a milestone with 2 digits. Then travels for 1 hour and sees the same 2 di...

Rajeev is trapped atop a building 200m high. He has with him a rope 150m long. There is a hook at the top where he stands. Looking down, ...

You have been taken hostage by terrorists. Terrorist has a revolver with 6 empty chambers. He now loads the revolver with 2 bullets in fron...