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26 Oct 2018
6. Suppose that n is an integer and n > 2. Prove that n2 - 4 is a prime number if and only if n = 3. (4 marks]
6. Suppose that n is an integer and n > 2. Prove that n2 - 4 is a prime number if and only if n = 3. (4 marks]
16 Jan 2023
Elin HesselLv2
27 Oct 2018
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