if `3+1/4(3+d)+1/4^2 (3+2d)+.................oo=8` then the value of `d` is

if quad (1)/(4)(3+d)+(1)/(4^(2))(3+2d)+.............oo=8 then the value of d is

If the sum to infinity of the series : 3+(3 +d) xx 1/4 + (3 + 2d)xx1/4^2 + .......... is 4 8/9 , find d. Also name the series.

If 3 + (3 + d) (1)/(4) + (3+ 2d) (1)/(4^(2)) + …oo= 8 then d=

Let d_(1),d_(2),d_(3),......,d_(k) be all the divisors of a positive integer n including 1 and n. Suppose d_(1)+d_(2)+d_(3)+......+d_(k)=72, then the value of (1)/(d_(1))+(1)/(d_(2))+(1)/(d_(3))+......+(1)/(d_(k)) is

If 3+(3+d) (1)/(4)+(3+2 d) (1)/(4^(2)) +.., oo is (44)/(9) then d =

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

If 1/x+2/3= 1/(2x)+3/4 then the value of x is A) 2 B) 8 C) 6 D) 4

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