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Q: If the ratio of the 11th term of an AP to its 18th term is 2 : 3. Find the ratio of the sum of its first five terms to the sum of its first 10 terms.
  • A. 1 : 2
  • B. 5 : 4
  • C. 6 : 17
  • D. 17 : 6
Correct Answer: Option C -
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Explanations:

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