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5/3 mod 7 =

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+1 vote
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in Cryptograph & Network Security by (60.0k points)
5/3 mod 7 =

(a) 2

(b) 3

(c) 4

(d) 5

The question was posed to me during a job interview.

I want to ask this question from Polynomial and Modular Arithmetic- III in chapter Basic Concepts in Number Theory and Finite Fields of Cryptograph & Network Security

1 Answer

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Best answer
Correct choice is (c) 4

The explanation: 5/3 mod 7 = (5×3^-1) mod 7 = (5×5) mod 7 = 4.

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