हि प रि वसप द 3े -- o= L oo 2.की... o कि 1 – InterviewSolution

1.	हि प रि वसप द 3े -- o= L oo 2.की... o कि 15
Answer» 49=7^2 and 343=7^3(7)^2n+3-(7^2)^n+2/(7^3)^n+1)^2/3=7^2n+3-7^2n+4/7^2n+27^2n gets cancelled outhence7^3-7^4/7^2take 7^2 commonhence7^2(7-7^2)/7^27-49=-35

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