Let `S_n` denote the sum of first `n` terms of an A.P. If `S_(2n)=3S_n ,` then find the ratio `S_(3n)//S_ndot`

Let S_(n) denote the sum of the first n tem of an A.P.If S_(2n)=3S_(n) then prove that (S_(3n))/(S_(n))=6

Let S_(n) be the sum of first n terms of and A.P. If S_(3n)=5S_(n) , then find the value of (S_(5n))/(S_(n)) is.

Let S_(n) denotes the sum of the first of n terms of A.P.and S_(2n)=3S_(n). then the ratio S_(3n):S_(n) is equal to

S_(n) denote the sum of the first n terms of an A.P. If S_(2n)=3S_(n) , then S_(3n):S_(n) is equal to

If S_(n) denotes the sum of first n terms of an A.P. If S_(2n) = 5(S_n) , then prove (S_(6n))/(S_(3n))=17/8