You find yourself in a strange place guarded by two guards.One of the guard always say truth while other always lies.You don't know the identity of the two.You can ask only one question to go out from there. What should you ask?

The centre of the third figure is empty. What digit should fit inside?

When Jack was six years old he hammered a nail into his favourite tree to mark his height. Ten years later at age sixteen, Jack returned to see how much higher the nail was. If the tree grew by five centimetres each year, how much higher would the nail be?

An express train takes 3 seconds to enter the tunnel which is 1 km long.
If it is travelling at 120 km an hour, how long will it take to pass completely through the tunnel?

John named his first son Alpha, second Beta, third Charlie and fourth Delta. What is the fifth son's name?

A man in a car saw a Golden Door, Silver Door and a Bronze Door. What door did he open first?

A man walked into a pub and went straight towards the Barman. He asked for a dirty martini from the Barman. The Barman thought something and then pulled out a pistol from his drawer and aimed it directly at the man. Why did he do that?

The day before yesterday I was 25 and the next year I will be 28. This is true only one day in a year. What day is my birthday?

What does the below rebus puzzle mean?

There’s a one-story house in which everything is yellow. Yellow walls, yellow doors, yellow furniture. What colour are the stairs?