等差数列{An}中,Sn=324,S6=36,Sn-6=144(n>6),则n为多少?
等差数列{An}中,Sn=324,S6=36,Sn-6=144(n>6),则n为多少?
等差数列{an}的前n项和为Sn,已知S6=36,Sn=324,S(n-6)=144(n>6),则n为多少?
Sn是等差数列an的前n项和,若S6=36,Sn=324,S(n-6)=144(n>6),则n等于?
设Sn是等差数列{an}的前n项和,已知S6=36,Sn=324,Sn-6=144,则n=( )
sn为等差数列,{an}的前n项和已知s6=36,sn=324,S(n-6){注,角标}=144(n大于6),求n
设Sn为等差数列{an}的前n项和,已知s6=36,Sn=324 ,S(n-6)=144 ,(n>6) ,求n的值
Sn是等差数列前n项和,已知S6=36,Sn=324,Sn-6=144,则n的值为?
.已知Sn是等差数列{an}的前n项和,若S6=36,Sn=324,Sn-6=144(n>6),则n等于 ()
1.设sn是等差数列{an}的前n项和,已知S6=36,Sn=324,若Sn-6=144(n》6),则n=
等差数列an的前n项和sn,已知s6=36,sn=324,若s(6-n)=144,求数列的项数
等差数列an的前n项和sn,已知s6=36,sn=324,若s(n-6)=144,求数列的项数
设数列{an}的前n项和为Sn,若a1=1,an+1=3Sn(n∈N*),则S6=( )