Question: Discsrete Math, I need a complete solution. 7. Number Theory[12.5pt]. Prove that if n E Z then n2 0 (mod 4) or n 1 (mod

Discsrete Math, I need a complete solution.

Discsrete Math, I need a complete solution. 7. Number Theory[12.5pt]. Prove that

7. Number Theory[12.5pt]. Prove that if n E Z then n2 0 (mod 4) or n 1 (mod 4). 8. Number Theory[12.5pt]. Show that if a, b, c and m are integers such that m 2 2, c > 0, and a b (mod m), then ac bc (mod mc

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