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If log a, log b and log c are in arithmetic progression, then a, b and c are in∶

If log a, log b and log c are in arithmetic progression, then a, b and c are in∶ Correct Answer Geometric Progression

∵ log a, log b and log c are in arithmetic progression.

∴ log b - log a = log c - log b

⇒ 2 log b = log a + log c

⇒ log b2 = log ac     

⇒ b2 = ac

∴ a, b and c are in geometric progression.

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