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If `S_n` denotes the sum of first `n` terms of an A.P. <`a_n`> such that `(S_m)/(S_n)=(m^2)/(n^2),\ t h e n(a_m)/(a_n)=` a.`(2m+1)/(2n+1)` b. `(2m-1)/(2n-1)` c. `(m-1)/(n-1)` d. `(m+1)/(n+1)`

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`(Sn)/(Sn)=(m^2)/(n^2)`
`=>(m2{2a+(m−1)d})/(m2{2a+(n−1)d})=(m2)/(n2)` v `=>({2a+(m−1)d})/({2a+(n−1)d})=m/n`
`=>2an+ndm−nd=2am+nmd−md`
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