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2.The sum of first p,q,r terms of an AP are a,b,c respectively. Then show that a(q-r)/p +b(r-p)/q + c(p-q)/r =0 |
| Answer» 2.The sum of first p,q,r terms of an AP are a,b,c respectively. Then show that a(q-r)/p +b(r-p)/q + c(p-q)/r =0 | |