Question: QUESTION 3 a) Prove that the following statement is true for every n > 2, n = Z+ 4 T 6 -+ 2n =1 -

QUESTION 3 a) Prove that the following statement is true for every n > 2, n = Z+ 4 T 6 -+ 2n =1 - 3! (n+1)! (n+1)! (8 marks) Given A = { {}" U [4, 5), where ne Z+. Find the set of upper bound and set of lower bound of A 09 Find the supremum, infimum, maximum and minimum of A, if they exist. Otherwise, write 'none'. iii Find the set of interior point and boundary point. iv Determine whether A is closed or not. (10 marks)

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