Last night, our Women Who Wine evening was at chez K for apéro and games. I arrived at 17h15, guests arrived between 18h-19h, and all left around 21h30 but K, J, and I who talked until midnight. There were 11 of us and when all was said and played, 7 cadaver bottles got buried. Two people drank only water and juice. What is the probability that I made it home without bumping into a lamppost, tripping on the stairs, and dropping my house keys?