Exercise 15 (25 marks) If p is an odd prime, p > 1, prove that 12345... (p - 2) = (-1)(p+1)/2 (mod p).
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Exercise 15 (25 marks) If p is an odd prime, p > 1, prove that 12345... (p - 2) = (-1)(p+1)/2 (mod p).
Exercise 15 (25 marks) If p is an odd prime, p > 1, prove that 12345... (p - 2) = (-1)(p+1)/2 (mod p).
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