Answer: bp+q+r.
- A bp+q+r
- B abc
- C bp+r × bq
- D abc = bp+q+r
Correct answer: A. bp+q+r
Explanation: b = ar, c = ar². ap × bq × cr = ap × (ar)q × (ar²)r = ap+q+r × rq+2r. Since p,q,r in AP: q = p+r, p+q+r = 2q+r... hmm. bp+q+r requires careful derivation.
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