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  3. 5 for n gt 1 recall that zn 0n 1...

Question: 5 for n gt 1 recall that zn 0n 1...

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(5) For n > 1, recall that Zn (0,n- 1] is the set of residue classes modulo n. For a, b Z, we have [ab a+ b] and [a] [b) (ab (a) Give the operation tables for +, on (b) What aret the additive and multiplicative identity elements (if they ex- ist)? Give additive inverses -[a] and multiplicative inverses (a1 (if they exist). (c) Is Zs a field?
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