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Unformatted text preview: a and b are integers and p is prime, then ( a + b ) p a p + b p (mod p ). 4. Prove that if n > 4 is composite, then ( n1)! (mod n ) . 5. Solve the following congruences. (a) 91 x 84 (mod 143) (b) 91 x 84 (mod 147) 1...
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 Spring '08
 YEE
 Number Theory, Integers

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