Monty Hall Problem (Irene)
In my opinion, undoubtedly, the best option is to change the choice. If I pick a goat at first time, there is only one goat the host can reveal. So, the host opens the only other goat door and then I swap to the remaining closed door the car. So, the probability of winning a car by changing my choice is of 74%, and of winning a goat is 26%. If I keep my choice, it doesn’t matter which other goat door the host opens, because I am sticking with my first choice and the chance that I have already picked the car is 40%, and the chance I have already picked a goat is 60%.