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  • 06-06-2023
  • Mathematics
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2. An integer a is said to be congruent to r modulo 3 (where r € Z,0 < r < 3) if there exists an integer n such that a = 3n+r. (a) If a is congruent to 1 modulo 3 and b is congruent to 2 modulo 3, p

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