यदि X = {8n – 7n – 1 : n ∈।N} तथा Y = {49n – 49 : n ∈।N} हो‚ तो

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यदि X = {8<sup>n </sup>– 7n – 1 : n ∈।N} तथा Y = {49n – 49 : n ∈।N} हो‚ तो