7. Answer these questions for the poset ({2, 6, 8, 12, 18, 36, 48, 60, 96), ), where "|" represents the "divides" relation. (Hint: create a Hasse diagram.) a. Find the maximal elements. b. Find the minimal elements. c. Is there a greatest element? d. Is there a least element? e. Find all upper bounds of {6, 8).

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