How many people must be gathered together in a room, before you can be certain that there is a greater than 50/50 chance that at least two of them have the same birthday?

After a heavy Thanksgiving meal, the night watchman went to work. In the morning, he told his boss he had dreamed that a saboteur planted a bomb in the factory and that he felt it was a warning. The boss promptly fired him. Worker confused, Why boss fire him?

How many triangles can you find in this given picture?

Can you spot the hidden girl in the picture below?

Solve the mathematical equation in the picture below.

If I put in one bird per cage, I have one bird too many. If I put in two bird per cage, I have one cage too many. How many cages and birds do I have?

How many letters are in the alphabet?

The more it dries, the wetter it becomes. Can you tell what it is?

No one wants to have it, but if one got it, he does not want to lose it. What is It?

If an electric train is travelling south, then which way is the smoke going?