[" 6.The sum of the first "n" terms of an "AP" is "((5n^(2))/(2)+(3n)/(2))*" Find the "n" th term "],[" and the "20" th term of this AP."]

(i) The sum of the first n terms of an AP is ((5n^(2))/(2) + (3n)/(2)) . Find the nth term and the 20th term of this AP. (ii) The sum of the first n terms of an AP is ((3n^(2))/(2) + (5n)/(2)). Find its nth term and the 25th 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.

If sum of n terms in an A.P is ((5n^2)/2+(3n)/2) then find its 20th term

The sum of first n terms of an AP is 4n^(2)+2n Find its n 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

The sum of the first n terms of an A.P. is 3n^2+6n . Find the n^(th) term of this A.P.

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

The sum of the first n terms of an AP is given by S_(n) =n^(2)+5n .find the sixteenth term of the AP.

If sum of first n terms of an AP is 2n^(2)+5n. Then find S_(20)