Help with these probability questions:

• What is the probability that you randomly pick the same arrangement of the letters in "Florida" as someone else? (Give your answer as a decimal rounded to three decimal places.)
• The DaSilva family just moved into their new home and are selecting furniture for their new family room. They are considering 5 different sofas, 2 different chairs, and 6 different tables. They plan to select one item from each category. What is the probability that Mrs. DaSilva and Mr. DaSilva randomly select the exact same furniture set if they make their selections independent of one another? (Give your answer as a decimal rounded to three decimal places.)
• Considering that there is a large number of ways to arrange the letters in the word "Mississippi", what is the probability that you and a classmate could randomly select the same arrangement? (Give your answer as a decimal rounded to three decimal places.)