a let n abc7 prove that n equiv a b c mod 6b
a) Let n = (abc)7. Prove that n ≡ a + b + c (mod 6).
b) Use congruences to show that 4|32n - 1 for all integers n ≥ 0.
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a let n abc7 prove that n equiv a b c mod 6b use congruences to show that 432n - 1 for all integers n ge
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