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The multiplicative Inverse of 1234 mod 4321 is

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The multiplicative Inverse of 1234 mod 4321 is

(a) 3239

(b) 3213

(c) 3242

(d) Does not exist

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I want to ask this question from Number Theory topic in chapter Basic Concepts in Number Theory and Finite Fields of Cryptograph & Network Security

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Correct option is (a) 3239

Explanation: The multiplicative Inverse of 1234 mod 4321 is 3239.

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