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If x, y, z are real numbers satisfying the equation 25(9x^2 + y^2) + 9z^2 – 15(5xy + yz + 3zx) = 0, then x, y, z are in

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If x, y, z are real numbers satisfying the equation 25(9x2 + y2) + 9z2 – 15(5xy + yz + 3zx) = 0, then x, y, z are in

(a) A.P

(b) G .P

(c) H.P

(d) None of these

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Correct option is (a) A.P

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