In the beginning N identical particles (or balls) randomly are disrtibuted over M containers (or urns).[br]Every step we select one ball with equal probability and move it to another (also random) urn.[br]With "Explanation" mode all the process is depicted slowly.[br]If N is high it's good to choose "BarChart" display method.

1. What is going on with initial distribution?[br]2. What is equilibrium distribution?[br]3. How relative fluctuations depend on N?