Explain the definition of congruence modulo n

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Question: 1. Is [2]=[123] modulo 6? Explain.

2. Write an algorithm that counts to 18 by twos.

3. Prove, using only the definition of congruence modulo n, that if a ≡ b (mod n) and c ≡ d (mod n), then a+c ≡ b+d (mod n).

Reference no: EM131584808

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