If the sum of n tems of a series be `5n^2+3n`, find its nth term. Are the terms of this series in A.P.?

If the sum of n terms of an A.P. is 2n^2+3n then write its nth term.

The sum of n terms of an A.P. is n^(2) + 3n . Find its 20th term.

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

If the sum of n terms of a series is S_(n)=n(5n-3) find the n^(th) term and p^(th) term

The sum of n terms of a series is 3n^2+5n find the value of n if nth term is 152:

If the sum of first n terms of an A.P. series is n^(2) +2n, then the term of the series having value 201 is-

If sum of first n terms of an A.P is 2n^(2) + 7n, write its nth term.

If the nth term of a series be (2.3^(n-1) + 1) , find the sum of first r terms of the series.

The sum of n terms of AP is 3n^(2)+5n. and its nth term is 164. find the value of n.