Q. If the sum of the first p, q and r terms of an AP are x, y and z respectively, then prove that x/p (q-r) + y/q (r-p) + z/r (p-q) = 0.

Q. If the sum of the first p, q and r terms of an AP are x, y and z re

1.	Q. If the sum of the first p, q and r terms of an AP are x, y and z respectively, then prove that x/p (q-r) + y/q (r-p) + z/r (p-q) = 0.
Answer» Q. If the sum of the first p, q and r terms of an AP are x, y and z respectively, then prove that x/p (q-r) + y/q (r-p) + z/r (p-q) = 0.