Question

If x² + 9y² + 25z² = xyz $\left( \frac { 15 } { x } + \frac { 5 } { y } + \frac { 3 } { z } \right)$then x, y, z are in :

• A. AP
• B. GP
• C. HP
• D. None

Answer 1

Answer: (A)

AP

Answer 2

x = $\frac { 1 } { 1 - \mathrm { a } }$& y =

s = put a = 1– & b = 1–