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If the sum of the first 20 terms of the series \dfrac4*14+3*1^2+1^4+\dfrac4*24+3*2^2+2^4+\dfrac4*34+3*3^2+3^4+\dfrac4*44+3*4^2+4^4+*s is \dfracmn, where m and n are coprime, then m+n is equal to: | Watch the step-by-step video solution for this NIMCET PYQ.