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Question 210037
JEE Mathematics · Medium

Sequences and Series: GP ratio MCQ

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GP ratioMediumQuestion 210037

Question

In a GP, the 3rd term is 36 and the 5th term is 324. The common ratio is:
  1. A
    3
  2. B
    2
  3. C
    √3
  4. D
    ±3
    Correct

Correct answer

±3

Explanation

a₅/a₃ = r² → 324/36 = 9 → r² = 9 → r = ±3. Both give valid GPs.

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