John and Annie have two distinguishable ponds. Initially, each of the ponds contains four ducks and ve

John and Annie have two distinguishable ponds. Initially, each of the ponds contains four ducks and five geese. John first picks a bird uniformly at random from the left pond and moves it to the right pond. Then, Annie picks a bird uniformly at random from the right pond.
What is the probability that Annie picks a duck?

Answer rating: 100% (QA)

PAnnie picks duck PAnnie ... View the full answer