The sum to infinity of the series `1+2/3+6/3^2+14/3^4+...is `

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

Sum to infinity of the series 2/3 - 5/6 + 2/3 -11/24 +….. Is

If the sum to infinity of the series 1+2r+3r^2+4r^3+ is 9/4, then value of r is 1//2 b. 1//3 c. 1//4 d. none of these

If the sum to infinity of the series 1+2r+3r^2+4r^3+ is 9/4, then value of r is (a) 1//2 b. 1//3 c. 1//4 d. none of these

If the sum to infinity of the series 1 + 4x + 7x^2 + 10x^3 +............. is 35/16 then x= (A) 1/5 (B) 2/5 (C) 3/7 (D) 1/7

The sum to infinity of the series 1/2.4+1/4.6+1/6.8+1/8.10+....... is

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

If the sum to the infinity of the series 3+5r+7r^2+.... is 44/9 then find the value of r

Find the sum to infinity of the series 2+1+(1)/(2)+...oo.

Find the sum to infinity of the series 1^2+2^2+3^2+4^2+oodot