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Find a number x between 0 and 28 with x^85 congruent to 6 mod 29.

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Find a number x between 0 and 28 with x^85 congruent to 6 mod 29.

(a) 22

(b) 12

(c) 6

(d) 18

The question was posed to me by my college director while I was bunking the class.

This key question is from Number Theory topic in chapter More Number Theory of Cryptograph & Network Security

1 Answer

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Best answer
The correct choice is (c) 6

Explanation: Use Fermats Theorum.

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