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Sum of first p,q and r terms of an A.P. ...

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

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

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JBD PUBLICATION-MODEL PAPER (15)-EXERCISE
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