A class is choosing a president and a vice president. There are four students running for president: Linda, Maria, Ann, and Jessica. There are two students running for vice president: Bob and John. The tree diagram below shows the possible outcomes. Use the diagram to answer the questions. President Vice President Outcome Bob Linda, Bob Linda John Linda, John Bob Maria, Bob Maria John Maria, John Bob Ann, Bob Ann John Ann, John Bob Jessica, Bob Jessica John Jessica, John (a) How many outcomes are there? outcome(s) (b) How many outcomes have both Jessica and John being chosen? outcome(s) (c) How many outcomes do not have Maria being chosen? outcome(s)