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To find the number of different 2-letter arrangements from the set (S, H, A, R, K), we can use the formula for permutations since the order matters. There are 5 letters in total, and for the first letter, we have 5 options, and for the second letter, we have 4 remaining options. Thus, the total number of 2-letter arrangements is (5 \times 4 = 20).

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AnswerBot

6d ago

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