In an arithmetic progression, the 3rd term is 15 and the 7th term is 27. What is the 10th term?

A 30

B 33

C 36

D 39

✓ Correct Answer: Option C

Let 'a' be the first term and 'd' be the common difference. a+2d=15 and a+6d=27. Subtracting yields 4d=12, so d=3. Substituting d=3 into a+2d=15 gives a+6=15, so a=9. The 10th term is a+9d = 9+9(3) = 9+27 = 36.

💡 Why is C) the correct answer?

The correct answer to the question "In an arithmetic progression, the 3rd term is 15 and the 7th term is 27. What is the 10th term?" is Option C: 36.

The other options — A) 30, B) 33, D) 39 — are incorrect for this GMAT Exam Prep question. As explained above: Let 'a' be the first term and 'd' be the common difference. a+2d=15 and a+6d=27. Subtracting yields 4d=12, so d=3. Substituting d=3 into a+2d=15 gives a+6=15, so a=9. The 10th term is a+9d = 9+9(3) =…

📚 About This GMAT Exam Prep Practice Question

This 3-level GMAT Exam Prep question from the Quantitative Reasoning topic is part of BrainForge Quiz's free exam preparation library. Each question includes the correct answer and a detailed explanation to help you understand the underlying concept, not just memorize the answer.

How to use this page: Read the question above, consider all four options (A through D), then check the highlighted correct answer and explanation. For active timed practice, start a free GMAT Exam Prep practice test or use flashcards for spaced repetition review.

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In an arithmetic progression, the 3rd term is 15 and the 7th term is 27. What is the 10th term?

✓ Correct Answer: Option C

📚 About This GMAT Exam Prep Practice Question

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