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The sum of the first p , q , r terms of ...

The sum of the first `p , q , r` terms of an A.P. are `a , b , c` respectively. Show 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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RD SHARMA ENGLISH-ARITHMETIC PROGRESSIONS-All Questions
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  3. The sum of the first p , q , r terms of an A.P. are a , b , c respecti...

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  5. If the p^(t h) term of an A.P. is q and the q^(t h) term is p , prove ...

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  12. Let a sequence be defined by a1=1,a2=1 and an=a(n-1)+a(n-2) for al...

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  13. Find the next five terms of each of the following sequences given by: ...

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  14. Find the indicated terms in each of the following sequences whose nth ...

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  15. Write the first five terms of the sequence defined by an=(-1)^(n-1). 2...

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  18. A sequence is defined by an=n^3-6n^2+11 n-6. Show that the first three...

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