Question: Can you please help me with the problem shown in the attached screenshot? Sarah, Simone, Maria, and Katrina have all been invited to a dinner
Can you please help me with the problem shown in the attached screenshot?

Sarah, Simone, Maria, and Katrina have all been invited to a dinner party. They arrive randomly and each person arrives at a different time. a. In how many ways can they arrive? b. In how many ways can Sarah arrive first and Katrina last? c. Find the probability that Sarah will arrive first and Katrina last. a. (Type an integer.) b. (Type an integer.) C. (Type a fraction. Simplify your answer.)
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