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NDA 2012
Exam
NDA
Year
2012
Subject
Mathematics
Chapter
Sequences and Series

NDA 2012 · Mathematics · Sequences and Series

The sum of first 10 terms and 20 terms of an AP are 120 and 440...

The sum of first 10 terms and 20 terms of an AP are 120 and 440 respectively. What is the common difference?

Options

  1. A11
  2. B22
  3. C33
  4. D44

Correct answer

B. 22

Step-by-step solution

The correct answer is option (B)
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