How can you take 2 from 5 and leave 4?

The Puzzle: A girl, a boy, and a dog start walking down a road.

They start at the same time, from the same point, in the same direction.

The boy walks at 5 km/h, the girl at 6 km/h.

The dog runs from boy to girl and back again with a constant speed of 10 km/h. The dog does not slow down on the turn.
How far does the dog travel in 1 hour?

Three doctors said that Bill was their brother. Bill says he has no brothers. How many brothers does Bill actually have?

A container contains 100 eggs. They can be either fresh or rotten. What is sure is the fact that there is at least one fresh egg in that container.

If you are asked to pick two eggs randomly from the container, at least one of them will be rotten.

Can you calculate how many eggs in that container are fresh?

Can you move 2 matchsticks to form four equal sized squares.

Five thieves looted a bank and they ran away in a car. The bank staff informed the police and they began the search of their car in their jeep. They found them on a road and chased them eventually catching them. The light that is used to fill the number plate was broken on the thieves' car. Also, the headlights of the jeep police were not working. How were the police able to catch the thieves then?

How is the moon similar to a dollar?

I have no doors but I have keys, I have no rooms but I have space, you can enter but you can’t leave! What am I?

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

Why did Buffon take the goal with him after every Juventus match?