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`sum_(m=1)^(oo) sum_(n=1)^(oo)(m^(2)n)/(3^(m)(n.3^(m)+m.3^(n)))=p/q` (where `p` & `q` are coprime) then:A. `p+q=41`B. `pltq`C. `p` is perfect squareD. `q` is perfect square |
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Answer» Correct Answer - A::B::C abc `2S=sum_(m=1)^(oo) sum_(n=1)^(oo) (m.n).(m.3^(n)+n.3^(n))(n/(3^(m))+m/(3^(n)))` |
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