Answer:To find the common difference of the arithmetic sequence 1, 3/2, 2, 5/2, 3, we need to subtract any term from its subsequent term.Let's subtract the first term from the second term:3/2 - 1 = 3/2 - 2/2 = 1/2Now, let's subtract the second term from the third term:2 - 3/2 = 4/2 - 3/2 = 1/2Let's subtract the third term from the fourth term:5/2 - 2 = 5/2 - 4/2 = 1/2Let's subtract the fourth term from the fifth term:3 - 5/2 = 6/2 - 5/2 = 1/2Since the difference between any two consecutive terms is consistently 1/2, the common difference is 1/2.Answer: The common difference is 1/2.