Question: Please type, I have a hard time reading handwriting. Thank you very much! Problem 10 (8 points): Prove that for any positive integer n ,

Please type, I have a hard time reading handwriting. Thank you very much!

Problem 10 (8 points): Prove that for any positive integer n, 6 evenly divides 7n-1

Problem 11 (8 points): Guess a formula for the sum below, and prove you are right by induction.

12+23++n(n+1)

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