Question: c) Prove that, for any integer n,(11n+2) is even if and only if (5n+3) is odd (name your proof technique). d) Prove that, if a0

c) Prove that, for any integer n,(11n+2) is even if and

c) Prove that, for any integer n,(11n+2) is even if and only if (5n+3) is odd (name your proof technique). d) Prove that, if a0 and b0 then ab2a+b (name your proof technique)

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