1) Provide a counter example to the following statements a) If a b then b a b) If n is prime then n 2 1 is also prime c) For all integers a and b, a b is not an integer d) For all integers a and b, if a b 2 then a b

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Question: 1) Provide a counter example to the following statements: a) If a|b then b|a. b) If n is prime then n 2 + 1 is

1) Provide a counter example to the following statements: a) If a|b then b|a. b) If n is prime then n² + 1 is also prime c) For all integers a and b, a/b is not an integer. d) For all integers a and b, if a|b²then a|b

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