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Modular Arithmetic and Congruence Modulo

Two integers ...

Question

Two integers a and b are congruence modulo n if _____ for some integer k.

b - a = kn

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b + a = kn

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b - a = 0

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b + a = 0

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Solution

The correct option is A b - a = kn
Two integers a and b are congruence modulo n if they differ by an integer multiple of n.
i.e., b - a = kn for some integer k.

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