Happy or Sad?

Three women dressed in suimsuits were standing together. Two were sad and one was happy. But the sad women were both smiling and the happy one was crying>
Why should that be so?

Chess

Two grandmasters played five games of chess. Each won the same number of games and lost the same number of games. There were no draws in any of the games.
How could this be so?

The Man in the House

A man entered a house. There was no one else in the house. H walked into a room, stopped, and then slowly raised his hands above his head. After a moment, he turned around, let out a laugh, and left.
Why?

Observation

A new lateral-thinking problem... this time a visual and easy one! 

The Man Who Hanged Himself

Not far from Madrid, there is a large wooden barn. The barn is completely empty except for a dead man hanging from the central rafter. The rope around his neck is ten feet long and his feet are three feet off the ground. The nearest wall is 20 feet away. It is not possible to climb up the walls or along the rafters, yet he hanged himself.
How did he manage it?

The Two Americans

There were two Americans waiting at the entrance to the British Museum. One of them was the father of the other one’s son.
How could this be so?

Bombs Away!

One night during the Second World War, an allied bomber was on a mission over Germany. The plane was in perfect condition and everything on it worked properly. When it had reached its target, the pilot ordered the bomb doors opened. They opened. He then ordered the bombs released. They were released. But the bombs did not fall from the plane.

Why should this be so?

The Man in the Elevator

A man lives on the tenth floor of a building. Every day, he takes the elevator to the first floor to go to work or to go shopping. When he returns, he always takes the elevator to the seventh floor and then walks the remaining flights of stairs to his appartement on the tenth floor.

Why does he do this?