Find the general term and sum to n terms of the sequanece `1,4/3,7/9,10/27,...`

Find the sum to n terms of the series 3+15+35+63+

The sum to n terms of the series 4/3 + 10/9 + 28/27 + ……. is

Find the sum of 7 terms of the G.P. 1,-3,9,-27....

The sum to n terms of the series 1/2 + 3/4 + 7/8 + 15/16 + ....... is

Find the sum to n terms of the series 3+33+333+… to n terms.

Write the n^(th) term of the following sequences. 1/2,3/4,5/6,7/8,9/10,...

Find the sum of first n terms and the sum of first 5 terms of the geometric series 1+ 2/3 +4/9 +............