Answer: 8.
- A 6
- B 7
- C 8
- D 10
Correct answer: C. 8
Explanation: GM = sqrt(4×16) = sqrt(64) = 8.
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