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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|b2 then a|b

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