There already is a question with answers about ICM: Malmuth-Harville Formula by Bill Chen at poker.stackexchange.com: ICM: Malmuth-Harville Formula by Bill Chen
I have no rights to comment it but I have a question. So I ask it here. Both answerers operate with probabilities to win. The first has numbers:80, 17,3. The second one has numbers:50,30,20.
Where to take these values?