Answer: 3.
- A 2
- B 3
- C 4
- D 6
Correct answer: B. 3
Explanation: r = 6/2 = 3 (each term is multiplied by 3).
Bar heights for AP 2, 5, 8, 11 with the common difference d=3 marked between consecutive terms.
Concept context
Arithmetic progressions, geometric progressions, and sums