Two petrol stations are located in a street at Victoria island, each of the petrol stations has 5 pumps, an experiment was carry out to determine the number of pumps in use at a particular time of the day at each of the petrol stations, assume an experimental outcome is (x,y), where x specified the number of pumps in use at the 1st station and y the number of pumps in use at the second station. How many of such outcome will you have in this experiment?