Find the sum of the first n terms of the arithmetic sequence
`1/n,3/n,5/n,7/n`,.......

What is the sum of the first n term of the arithmetic sequence 1,3,5,7......?

Find the sum of the first n terms of the series whose nth term is n(n+3) .

Find the sum to n terms of the sequence 4+44+444+…….

The algebraic form for the sum of first n terms of an arithmetic sequence is 2n^(2) +8n'. How many consecutive terms of the sequence, starting from the first, are to be added to get 330 ?

If the sum of first n terms of an arithemetic progression 2,5,8… is equal to sum of the first n terms of another arithmetic progression 57,59,61.. Then find the value of n

The sum of first n terms of an arithmetic sequence is n^2+2n Prove that the sum of continuous terms starting from the first of the sequence 3,5,7,..... added to 1 gives a perfect square.

Find the sum to n terms of the sequence 7,77,777,7777,…….

Find the sum to n terms of the series whose n^(th) term is n^3-3^n

Find the sum to n terms of the sequence 8,88,888,8888…

The sum of first n terms of an arithmetic sequence is n^2+2n Find the common difference.