Latest TCS Aptitude Question SOLUTION: . If the sum to infinity of the series 2 + (2 - d)2/3 + (2 + d) 4/9 + (2+ 3d) 8/27 + D.. is 5/2, what is the value of d? (1) 7/12 (2) -7/12 (3) -5/12 (4) 5/12