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in an AP , Sp=q , Sq=p and Sr denotes th...

in an `AP , S_p=q , S_q=p` and `S_r` denotes the sum of the first `r` terms. Then `S_(p+q)=`

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RD SHARMA-ARITHMETIC PROGRESSIONS-All Questions
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  10. The common difference of an A.P., the sum of whose n terms is Sn , i...

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