1.

On Z, a relation R is defined as follows: a,b in Z, aRb if 7 divides a -b The equivalence class containing -17 is

Answer»

{...,-17,-10,-3,4,11,...}
{...,-17,-9,-2,3, 10, ...}
{...,-17,-13,-10,7,13,...}
NONE of these

Answer :A


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