If the sum of n terms of an A.P. is `3n^2 + 5n` and its `m^(th)` term is 164, find the value of m.

If the sum of n terms of an A.P. is 3n^2 + 2n : Find the rth term.

The sum of n terms of an A.P. is 3n^2 + 4n . Find the A.P.

The sum of n terms of an A.P. is 136, the common difference is 4 and the last term is 31, find the number of terms.

If the sum of first 7 terms of an AP is 49 and that of 17, terms is 289, find the sum of first n terms.

Find the sum of 40 terms of an A.P. whose third term is 1 and 6th term is - 11.

Find the sum of 32 terms of an A.P. whose third term is 1 and the 6th term is -11.

If the sum of n terms of an A.P. is (pn+qn^2) , where p and g are constants, find the common difference.

If the sum of n terms of an A.P. is (pn + qn^2) , where p and q are constants, find the common difference.

The first term of an A.P. is 5 and its 100th term is - 292. Find the 50th term of this A.P.