Colegiul National C. Negruzzi (Iași - Roumanie)
This article presents an introduction to the study of probabilities, through a problem with 7 tasks. In order to approach the problem, we explain in the beginning of the article some basic properties and definitions about probability, expected values and discrete random variables. The problem requires us to find the probability that some events happen when rolling dice, or their mathematical expectancy. Our problem impresses because, although it can be seen as a children’s game, it contains a lot of useful information for the field of statistics.