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The roots of the equation x^5 – 40x^4 + ax^3 + bx^2 + cx + d = 0 are in GP. If sum of reciprocals of the roots is 10, then

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The roots of the equation x5 – 40x4 + ax3 + bx2 + cx + d = 0 are in GP. If sum of reciprocals of the roots is 10, then

(A) c2 = 1600 

(B) d2 = 16 

(C) d2 = 1024 

(D) c2 = 102400

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Correct option (C) (D)

Explanation:

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