Einstein wrote this riddle early In the 20th century. He said that 98% of the world's population could not solve it. There is no trick, just logic.

In a street, there are 5 houses, each in a different colour.


In each house lives a person with a different nationality.
These five owners drink a certain type of beverage, smoke a certain brand of cigar and keep a certain pet.
No owners have the same pet, smoke the same brand of cigar or drink the same beverage.

The question is: Who owns the fish?

Additional information:

The Brit lives in the red house
The Swede keeps dogs as pets.
The Dane drinks tea
The green house is on the left of the white house
The green house's owner drinks coffee
The person who smokes Pall Mall rears birds
The owner of the yellow house smokes Dunhill
The man living in the center house drinks milk
The Norwegian lives in the first house
The man who smokes Blends lives next to the one who keeps cats
The man who keeps horses lives next to the man who smokes Dunhill
The owner who smokes Bluemaster drinks beer
The German smokes Prince
The Norwegian lives next to the blue house
The man who smokes Blend has a neighbour who drinks water

it's the german

Super Quick, and if I had a smaller pen and a biggger envelope, assuming the fish drinks water and can as well be considered a "neighbor," then my vote is for the house on the end @ #5, the right end looking from the street. If this is a ghastly error, then someone other than me posted to make the noob look foolish.

Yep it's the german.

You guys are like some of the smartest 2% of humans or else you know how to Google!

This is where I saw that by the way.

I find the calculations interesting:

http://everything2.com/index.pl?node_id=984348

I'm not that smart just good a googling for answers

Slightly off-topic, but have you ever seen a movie called The Strange Enigma Of Kaspar Hauser? One of those sort-true stories; Kaspar was kept in a shed by his parents until he was nearly thirty, and when he finally emerges into the world he's quite a sensation.
One of the local wise men tries to teach him logic. He uses the old riddle about meeting two men at a fork in the road. You need to ask these men for directions, and you only know that one of the men comes from a village where they always tell the truth, and the other from a village where they always lie. You need to ask a question which will tell you which you can trust. I forget the correct question and the logic behind it, but Kaspar listens to it all and then says, 'I would ask him a different question.' The wise man says, there is no other question. That's the answer to the riddle. Kaspar insists, 'I would ask him a different question!' The old guy gets all huffy and says, 'All right then, young man, what question would you ask?'
Kaspar replies, 'I would ask him if he is a frog.'

Does this relate to the D-A-L look-a-like competition?

With that frog right under your avatar it could be the start of the jephree lookalike comp! All those hand gestures, it's a real giveaway