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$If a, b, c are in geometric progression then the value of \frac{a - b}{b - c} is$

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Correct option is A

a,b,c are in G.P ⇒b=ar,c=bra−bb−c=a−bar−br=a−br(a−b)=1r But r=ba=cba−bb−c=ab or bc

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If a,b,c are in geometric progression then the value of a−bb−cis

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$If a, b, c are in geometric progression then the value of \frac{a - b}{b - c} is$