Plzz tell aue no 10 ????????? Share with your friends Share 0 Atul Shaw answered this Dear Student, Please find below the solution to the asked query: 38.Letabethefirsttermandrbethecommonratio.Henceserieswillbea,ar,ar2,ar3.... upto infinityAccording to question:a+ar=15⇒a1+r=15a=151+r ;iAlsoa=ar+ar2+ar3....upto infinityDividing both sides by a we get,1=r+r2+r3+.....upto infinitySum of infinite terms of G.P.=First Term1-Common Ratio⇒1=r1-r⇒1-r=r⇒2r=1⇒r=12Hence in i, we get,a=151+12=10Hence series is 10, 1012, 10122, 10123,.....upto infinity=10, 5, 52, 54,.....upto infinity Regards 0 View Full Answer