Example use

A number cube is rolled three times. An outcome is represented by a string of the sort OFE (meaning an odd number on the first roll, an even number on the second roll, and an even number on the third roll). The 8 outcomes are listed in the table below. Note that each outcome has the same probability. For each of the three events in the table, check the outcome(s) that are contained in the event. Then, in the last column, enter the probability of the event. Outcomes Probability OOE EOE EEO OEE EEE EOO OEO Event A: Exactly one odd number O O O O O O O X 5 Event B: An even number on the first roll or the second roll (or both) O O O O Event C: An even number on both the first and the last rolls O O O