NCERT Miscellaneous Exercise Q8 - Sequences and Series

Question: If a, b, c, d are in GP, prove that (aⁿ + bⁿ), (bⁿ + cⁿ), (cⁿ + dⁿ) are in GP.

Answer: (bⁿ + cⁿ)² = (aⁿ + bⁿ)(cⁿ + dⁿ).

Full step-by-step NCERT solution with diagrams on Something by Zero.