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Posted: **Wed May 11, 2022 10:44 pm**

: 6 25 Points Let N Be A Positive Integer A 7 Points Prove That 3n 6 Is Odd If And Only If N Is Odd B 8 Poin 1 (31.56 KiB) Viewed 12 times

6. (25 points) Let n be a positive integer. (a) (7 points) Prove that 3n – 6 is odd if and only if n is odd. (b) (8 points) Prove that n is odd if and only if nº is odd. (c) (10 points) Prove that n3 is odd if and only if 3n - 6 is odd.