solve (20 points ) Prove the following two statements (a) For every integer n, 72 n iff 8 n and 9n (b) It is not true that for every integer n, 90 n iff 6 n and 15

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solve (20 points ) Prove the following two statements  (a) For every integer n, 72 n iff 8 n and 9n  (b) It is not true that for every integer n, 90 n iff 6 n and 15

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Question: solve (20 points ) Prove the following two statements: (a) For every integer n, 72 n iff 8 n and 9n. (b) It is not

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