Question: Prove: If an integer n is not divisible by 3, then n - 1 is divisible by 3. (Hint: Which two forms could n

Prove: If an integer n is not divisible by 3, then n

Prove: If an integer n is not divisible by 3, then n - 1 is divisible by 3. (Hint: Which two forms could n take if it is not divisible by 3?)

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