Martingale is a gambling betting strategy based on the fact that the player raises the bets until he receives a win. Despite the seeming guarantee that this strategy will always result in a win, the martingale does not give the player an advantage. In the theory of gambling, there are a large number of strategies. When one of the players constantly loses, he, in fact, has only two options – to leave the game, fixing losses, or to continue the game, raising (doubling the stakes), so that in the event of a single win, not only return all his loss,...