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Q)

If $\;x=\sqrt{2+\sqrt{2+\sqrt{2+------\;\infty}}}\;and\;y=\sqrt{2\;\sqrt{2\;\sqrt{2\;\sqrt{2\;----\;\infty}}}}$ then $xy$ equals

$(a)\;2\qquad(b)\;4\qquad(c)\;0\qquad(d)\;1$

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