If the sum of the first n terms of series be `5n^(2)+2n`, then its second term is

If the sum of the first n terms of a series be 5n^(2) + 2n , then its second term is

If the sum of the first n terms of the series

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 the sum of first n terms of a series is 2n^(2) + 3n , find the series.

If the sum of first n terms of a series is (n +12) , then what is its third term?

If the sum of first n terms of a series is (n+12) then what is its third term?

If S_(n) the sum of first n terms of an AP is given by 2n^(2)+n, then find its nth term.

If the sum of first n terms of an A.P. is 3n^(2)-2n , then its 19th term is