The book represents the most thorough introduction to the Theory of Probability, a branch of mathematics. The presentation is scholarly precise, but in an easy-to-understand language. The author, Ion Saliu, made important discoveries in probability theory. Also, he has written original software that makes the mathematical calculations a lot easier and faster. There is an emphasis on real-life applications of probability theory, including the genetic code and the existence of intelligent life in other places in the Universe. Finally, the book contains the most scientific applications of probability theory to jeux de chance—games of chance—including gambling and lottery.