Question: 5. Prove that (a) if a is not divisible by 2 or 3, then a2 I 1 (mod 24). (b) if both p and q


5. Prove that (a) if a is not divisible by 2 or 3, then a2 I 1 (mod 24). (b) if both p and q are primes and p 2 q 2 5, then 24| (p2 q2)
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