How can a man go eight days without sleep?

What's the only room from which no one can enter or leave

There is a family that live in a round house. The two parents go out for a movie and leave a babysitter to watch their son. They come back and the kid was not there. Some one kidnapped him. The maid said she was cleaning in a corner. The cook said he was making pizza. The babysitter said she was getting a board game. Who kidnapped him.

When I get multiplied by any number, the sum of the figures in the product is always me. What am I?

What is the next number in this matchsticks series riddle?

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

He digs out tiny caves and stores gold and silver in them. He also built bridges of silver and made crowns of gold. They are the smallest you could imagine. Sooner or later everybody needs his help, yet many people are afraid to let him help them. Who is he?

If you’ve got me, you want to share me; if you share me, you haven’t kept me. What am I?

Peter wakes up daily to pick up his cycle and crosses the border between Spain and France daily with a bag on his shoulder. He is investigated daily by the officials but they don't find anything suspicious.

If we tell you that he is smuggling something what would it be?

Can you count the number of blocks in the picture below?