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a. Chantal is a member of the eighth-grade class. What is the probability that her act will be presented first?
b. Chantal's act was chosen to be presented first. Make a tree diagram, chart, or list showing all the possible orders in which the other three acts could be presented. Use the letters A, B, and C to represent these three acts.
c. Rory, Jesse, and Chantal are all members of the eighth-grade class who will each perform an act. What is the probability that Rory's act will immediately follow Jesse's? Explain how you found your answer.