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How many primitive roots are there for 25?(a) 4(b) 5(c) 7(d) 8The question was posed to me during an interview.This is a very interesting question from Number Theory in division More Number Theory of Cryptograph & Network Security

Answer»

Correct OPTION is (d) 8

Explanation: 2, 3, 8, 12, 13, 17, 22, 23 are the PRIMITIVE roots of 25.



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