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If log a, log b, log c are in A.P. then?

Correct Answer: a, b, c are in G.P.

Explanation:

∵ loga, logb, logc are in A.P. Then,
⇒ logb - loga = logc - logb
⇒ log b/a = log c/b
⇒ b/a = c/b
⇒ b2 = ac
∴ a, b, c are in G.P.


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