The sum of the first `n` terms of the A.P `3, 5 1/2, 8,...` is equal to the `2n^(th)` term of the A.P `16 1/2, 28 1/2, 40 1/2,...`. Calculate `n`

The sum of the first n terms of the arithmetical progression 3 , 5 1/ 2 , 8 ..... is equal to the 2 nth term of the A.P. ] , [ 16 1/ 2 , 28 1/ 2 , 40 1/ 2 ,.. Calculate the value of n

If the sum of the first 2n terms of the A.P.2,5,8,…, is equal to the sum of the first n terms of the A.P.57,59,61,…, then n equals

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

The sum of first n terms of an AP is (3n^2+6n) Find the n^(th) term and 15^(th) terms of the AP

Let S_(1) be the sum of the first n terms of the A.P 8,12,16,... and let S_(2) be the sum of the first n terms of the A.P 17,19,21,... assume n!=0 then S_(1)=S_(2) for

If the sum of the first 2n terms of the A.P.2,5,8,..., is equal to the sum of the first n terms of A.P.57,59,61,..., then n equals 10 b.12 c.11 d.13

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

Find the sum to n term of the A.P.1,3,5,7.....

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