`3/4 + 15 / 16 + 63 / 64 + ............ n terms`

2+4+7+11+16+............ to n terms

2+4+7+11+16+.......... to n terms

2 + 4 + 7 + 11 + 16 + .... to n term =

The n^(th) term of the sequence 1/2, 3/4, 7/8, 15/16 is ...................

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

find the sum of 15 terms of The sum of the series (1)/(3)+(1)/(15)+(1)/(35)+(1)/(63)+..........oo terms,is

1/2+3/4+7/8+15/16+..... t o n terms =

4/(1!) +16/(3!)+(64)/(5!) + ......=