Question: A room has three urns in it. One urn has two compartments, one with nothing in it, and one with a key which can open any of four safes. One safe has diamonds, one has stocks, one has cash, and one has a Cracker Jacks whistle of sentimental value to the owner of the urns. The other two urns each have three compartments. One of these urns has two empty compartments and one filled with Confederate currency. The third urn has one compartment filled with expensive perfume, one filled with stock certificates, and the third with the deed to a mansion. A person can pick an urn and any compartment and, if the key comes up, any one of the safes. What are the outcomes and their probabilities?