Question: Problem 6: prove the statement by direct proof: a) For all integers a, b, and c, if alb and alc then al (2b b) For

Problem 6: prove the statement by direct proof: a) For all

Problem 6: prove the statement by direct proof: a) For all integers a, b, and c, if alb and alc then al (2b b) For any odd integer n, 3c). 4 m and n, if m mod d) e) The sum of any four consecutive integers has the form 4k + 2 for some integer k For all integers n, if n mod 5 = 3 then n2 mod 5 4

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