Sum of first p, q, r terms of an A.P are a, b, c. Prove that a/p (q-r) + b/q (r-p) +c/r (p-q)=0

Sum of first p, q, r terms of an A.P are a, b, c. Prove that a/p (q-r)

1.	Sum of first p, q, r terms of an A.P are a, b, c. Prove that a/p (q-r) + b/q (r-p) +c/r (p-q)=0
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