There are 50 tickets in the bag, 40 of which bring prizes and the remaining 10 do not.
One ticket is randomly drawn from the bag. Calculate the probability of the event A that the chosen ticket brings a prize.
Two tickets are randomly drawn from the bag at the same time. Calculate the probability B of the event that both selected tickets bring a prize.
Three tickets are randomly drawn from the bag at the same time. Calculate the probability of the event C that at least one chosen ticket brings a prize.
