There is one thing that goes round the house and also inside the house but never even share a brief touch. What is it?

You and your two friends are working in a multinational company. How can you three find out the average salary of you all without disclosing your own salary to the other two?

Irene killed hundreds of people mercilessly and yet the police were not able to put her behind the bars. Why?

John was so frustrated to be the suspect of being a sleeper terrorist that he shoot himself right between the eyes with a revolver in his toilet. The revolver and the bullets were accurate. Minutes later John walks out of the toilet unharmed.
How can this be possible?

The measurement of time, That can't be found on a clock, But can be looked upon on a map.

Who is He ?

Is the statement valid that it does not matter how much older a sibling is, eventually the younger one will be half as old as the older one?

Samuel was out for a walk when it started to rain. He did not have an umbrella and he wasn't wearing a hat. His clothes were soaked, yet not a single hair on his head got wet. How could this happen?

There is an English word that can be used up to four times in a row without modifying the spelling and form a valid grammatical sentence.

Do you know what word is that?

It's a protector.
It sits on a bridge.
One individual can see directly through it, while others wonder what it hides.

What is it?

How can a man go eight days without sleep?