The sum of infinity of the progression
`9-3+1-(1)/(3)+…` is

The sum to infinity of the progression 9-3+1 -(1)/(3) + .... is

The sum to infinity of the progression 9-3 + 1-1/3 + ……..is

The sum to infinity of the series : 1+2 ( 1-(1)/( n )) + 3( 1 - ( 1)/( n ))^(2) +"...." is :

If the sum to infinity of the series 3 + (3 + d). (1)/(4) + (3 + 2d) (1)/(4^(2)) + ..... " is " (44)/(9) then find d

If the sum to infinity of the series 1- ( 1+d) (1)/(3) +(1+ 2d) (1)/(9) -( 1+3d) .(1)/( 27) + ………" is" (9)/(16) , find d.

Find the sum to infinity of the following G.P. (i) 1, (1)/(3) , (1)/(9) . (1)/(27),… (ii) 2 , (-2)/(3) , (2)/(9) , (-2)/(27),… .

The sum to infinity of the series : 1+ ( 2)/( 3) + ( 6)/( 3^(2)) +( 10)/( 3^(3))+ ( 14) /( 3^(4)) + "..........." is :

Find the sum to infinity of this geometric progression. 1,1/2,1/2^2,1/2^3,……