If the sum of `n` terms of a G.P. is `3-(3^(n+1))/(4^(2n))` , then find the common ratio.

If the sum of the n terms of a G.P. is (3^(n)-1) , then find the sum of the series whose terms are reciprocal of the given G.P..

If the sum of n terms of an AP is given by S_(n) = (2n^(2)+3n) then find its common differnece.

If the sum of n terms of an A.P is (4n^(2)-3n)/(4) then ,n^(th) term of the A.P

If the n^(th) term of a G.P. is 3 (4^(n+1)) then its first term and common ratio are respectively

If the sum of n terms of an A.P is 2n+3n^(2) , find the r^(th) term

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_(n)

If the sum of n terms of an A.P.is nP+(1)/(2)n(n-1)Q, where P and Q are constants,find the common difference.

If the sum of n terms of an A.P. is given by S_(n) =(3n^(2)+2n) , find its n^(th) term.