Question

Which of the following is a valid property for concurrency?

(a) a = b (mod n) if n|(a-b)

(b) a = b (mod n) implies b = a (mod n)

(c) a = b (mod n) and b = c (mod n) implies a = c (mod n)

(d) All of the mentioned

I had been asked this question in my homework.

The query is from Number Theory topic in section Basic Concepts in Number Theory and Finite Fields of Cryptograph & Network Security

Answer 1

Right choice is (d) All of the mentioned

To elaborate: All are valid properties of congruences and can be checked by using substituting values.