Question: problem 8.27 Lehman,Leighton,Meyer (a) Prove if n is not divisible by 3, then n2 1 mod 3. (b) Show that if n is odd, then

problem 8.27 Lehman,Leighton,Meyer

(a) Prove if n is not divisible by 3, then n2 1 mod 3. (b) Show that if n is odd, then n2 1 mod 8. (c) Conclude that if p is a prime greater than 3, then p2 1 is divisible by 24.

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