Question 4 – p92
Question 4 – p92. X 2 1 (mod p) for p >= 3 be prime X 2 – 1 0 (mod p) (x – 1) (x + 1) 0 (mod p) Hence, either (x – 1) 0 (mod p) or (x + 1) 0 (mod p) Equivalent to, x 1 (mod p) or x -1(mod p). Question 6 – p92. Let x = the total number of people,
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