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A realation rho is defined on set Z...

A realation ` rho` is defined on set Z , a set of all integers , such that `rho ={(x,y) in Z xx Z :Y -x` is divisible by 5} . Discuss whether ` rho` is an equialence relation .
IF ` A ={x in Z: (2 ,x) in rho , -10 le x le 10}` then mention the elements of A .

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