Sum of first 55 terms in an A.P.is 3300,find its `28^( th )` term.

If the sum of first 14 terms of an A.P. is 1050 and its first term is 10, find the 20^(th) term.

The sum of first six terms of an A.P.is 42. The ratio of its 10 th term to its 30 th term is 1:3. Find the first term of the A.P.

The sum of first six terms of an AP.is 42. The ratio of its 10^(th) term to its 30^(th) term is 1:3 . Find the first term of the A.P.

191.If the sum of first n terms of an A.P.is Zero,then the sum of next m terms,where a is the first term of the A.P.is

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 first 7 terms of an A.P.is 10 and that of next 7 terms is 167. Find the progression.

The sum of first seven terms of an A.P is 182 . If its 4(th) term and 7^(th) term are in the ratio 1:5 then Find the A.P

The sum of first n terms of an A.P.is 5n-n^(2) . Find the nth term of this A.P.

The sum of the first n terms of an A.P.is 4n^(2)+2n. Find the nth term of this A.P.

The sum of first 9 terms of an A.P. is 162. The ratio of its 6th term to its 13th term is 1:2 . Find the first and 15 t h term of the A.P.