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In a G.P. the 5th term is 81 and the 2nd term is 3. The common ratio is:
A$\tfrac{1}{3}$
B3
C9
D27
Answer & Solution
Correct answer: B. 3
ar⁴ = 81 and ar = 3 ⟹ r³ = 27 ⟹ r = 3.
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