If the \( 2^{\text {nd }}, 5^{\text {th }} \) and \( 9^{\text {th }} \) terms of a non-constant ...

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If the \( 2^{\text {nd }}, 5^{\text {th }} \) and \( 9^{\text {th }} \) terms of a non-constant A.P. are in G.P., then the common ratio of this G.P. is
(1) \( \frac{7}{4} \)
(2) \( \frac{8}{5} \)
(3) \( \frac{4}{3} \)
(4) 1
\( P \)
W.
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