A man lives on the fifteenth floor of an apartment building. Every morning he takes the elevator down to the lobby and leaves the building. In the evening, he gets into the elevator, and, if there is someone else in the elevator, or if it was raining that day, he goes back to his floor directly. Otherwise, he goes to the tenth floor and walks up five flights of stairs to his apartment. Can you explain why he does this?

If there are fifteen crows on a fence and the farmer shoots a third of them, how many crows are left?

They are the five precious gems of an everyday sort and all can be found on a Tennis Court. Who are they?

One absent-minded ancient philosopher forgot to wind up his only clock in the house. He had no radio, TV, telephone, internet, or any other means for telling time. So he travelled on foot to his friend's place a few miles down the straight desert road. He stayed at his friend's house for the night and when he came back home, he knew how to set his clock. How did he know?

Chef Andrea has to light the kitchen stoves to open her restaurant for the day. There are three stoves in the kitchen: A glass stove, a brick stove, and a wood stove. She only has one match. Which does she light up first?

Why do we preferably have round manhole covers and not square ones?

What does this rebus puzzle means ?

I possess a head

I flaunt a tail

But I don't have mouth or legs

Can you find out who I am?

He does not have any heart but still, He manages to live.
If you kill him, you will eventually die but yet you kill him.
He cannot run, who is He?

A man who was outside in the rain without an umbrella or hat didn’t get a single hair on his head wet. Why?