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Class 9MathematicsSequences and ProgressionsGeometric ProgressionEasy
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What is the missing term in the geometric progression (3,\Box,27,81,\ldots)?

Answer and explanation

Correct answer: (9)

The ratio of (27) and (81) is (3), so the missing term is (27\div3=9). In exams, apply the common ratio backward too.

Related tags

SequencesProgressionsGeometric-ProgressionClass-9EasyGeometric ProgressionSequences And ProgressionsMathematics
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10 more MCQs
  1. 1Which sequence is formed by a multiplication rule, not an addition rule?
  2. 2What is the 7th term of (4, 12, 36, 108, ...)?
  3. 3In the sequence \((81,27,9,3,\ldots)\), each term is \(\frac{1}{3}\) of the previous term. What is the sixth term?
  4. 4In the sequence 3, 6, 12, 24, ..., which is the first term greater than 500?
  5. 5In the sequence 5, 10, 20, 40, ..., which term is 5120?
  6. 6What is the common ratio in the sequence (2, 6, 18, 54, ...)?
  7. 7What will be the next term of the geometric progression (5,10,20,40,\ldots)?
  8. 8If a geometric progression has first term (4) and common ratio (2), what is the second term?
  9. 9What is the common ratio in the sequence (81,27,9,3,\ldots)?
  10. 10Is the sequence (3, 6, 12, 24, ...) a geometric progression?
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