Grade Upto college levelAnalytical GeometryInsert a A.M. between 5 and 20. anitha ashok 15 Years agoGrade Upto college level
vikas askiitian expertApproved Tutor Answer15 Years agoAM(arithemetic mean) = a+b/2 here in this question a = 5 & b = 20 so AM = 20+5/2 = 25/2 now series is 5 , 25/2 , 20 common difference = 15/2 & first term is 5 approve if u like my ans
Ashwin Sinha15 Years agoDear Anitha, Let a=5 & b=20. Now common diff.= (b-a)/2 =(20-5)/2=15/2 =d So, A.M. is a+d =5+15/2=25/2. Hope it helps!! Plz approve!!