No. of terms in the series `4,2,1,…,(1)/(128)` is :

Find the number of terms in the progression 4, 2, 1, …,(1)/(128).

Which term of the series 4,2,1,..... is (1/128) ?

nth term of the series 1,(1)/(2),(1)/(3),... is

The sum of n terms of the series (1)/(1 + x) + (2)/(1 + x^(2)) + (4)/(1 + x^(4)) + ……… is

The sum of the first 35 terms of the series (1)/(2) + (1)/(3) -(1)/(4) -(1)/(2) -(1)/(3) +(1)/(4) +(1)/(2) + (1)/(3) -(1)/(4)

Write the sum of 20 terms of the series: 1+1/2(1+2)+1/3(1+2+3)+

The sum of 10 terms of the series 1+2(1.1)+3(1.1)^(2)+4(1.1)^(3)+…. is

Sum of n terms of the series (1)/(1.2.3.4.)+(1)/(2.3.4.5)+(1)/(3.4.5.6)+...