There are 5 houses of 5 different colours. 
One person of a different nationality lives in each house. 
The 5 persons drink a certain beverage, smoke a certain brand of cigarette and have a certain pet. 
None has the same animal, smokes the same brand or drinks the same beverage.

Hints    : 1.The Englishman lives in the red house. 
                 2.The Sweedish person has a dog. 
                 3. The Danish person drinks tea. 
                 4.The green house is to the left of the white house 
                 5. The person in the green house drinks coffee. 
                 6.The person who smokes Players, raises birds. 
                 7.The person in the yellow house smokes Export A. 
                 8.The man living in the house in the middle drinks milk. 
                 9.The Norwegian lives in the first house. 
               10.The man who smokes Dumaurier lives beside the one who has cats. 
               11.The man who has horses lives beside the one who smokes Export A. 
               12.The man who smokes Rothmans drinks beer. 
               13.The German smokes Cigarello 
               14.The Norwegian lives next to the blue house. 
               15.The man who smokes Dumaurier has a neighbour who drinks water.

Who has a fish?

A group of ten people are being photographed.
The photographer places them into ten different positions.
He continues to shuffle them until he has taken picturesof the ten persons in all possible groupings.

How many pictures will he take?