The sum of the series `1+(1)/(4)_(1)/(16)+(1)/(64)+....oo` is

The sum of the series 1+(1)/(6)+(1)/(18)+(1)/(324)+......oo, is

The sum of the series 1+(1)/(4.2!)+(1)/(16.4!)+(1)/(64.6!)+...oo is

The sum of the series 1+1/(4*2!)+1/(16*4!)+1/(64*6!)+... is

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

The sum of the series 1+2(1+(1)/(n))+3(1+(1)/(n))^(2)+....oo is given by

The sum of the series 1 + 1/(4.2!) + 1/(16.4!) + 1/(64.6!) + ....infty is