4. Let n be a positive integer. (a) (5 points) Prove that n(n+1) is even by contradiction. (b) (5 points) Prove that n³
Posted: Wed Jul 06, 2022 11:46 am
4. Let n be a positive integer. (a) (5 points) Prove that n(n+1) is even by contradiction. (b) (5 points) Prove that n³ in any way you'd like.