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

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

If the sum of n terms of an AP is n^2-2n then find its n^(th) term

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

The sum of n terms of an AP is 3n^2+5n ,then find its 16th term.

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

The sum of first n terms of an A.P.is 5n^(2)+3n If its mth term is 168,(i) Find the value of m (ii) Find the 20th term of this AP

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

If sum of n terms of an A.P. is n^(2)+13 , find its 13^(th) term.

If sum of n terms of an AP is 3n^2+n . Find its 10^(th) term.

The sum of first n terms of an A.P. is 5n^(2) + 3n . If the nth term is 168, find the value of n. Also find the 20th term of the A.P.