Book Maths Puzzle Numerical Ability Data Interpretation

1/2 + 3/4 + 7/8 + ...... + 4095/4096 = ??

a. 43025/4096
b. 45057/4096
c. 44039/4096
d. 41071/4096

Read Solution (Total 1)

(1-1/2) + (1-(1/2)^2) + (1-(1/2)^3) ... (1-(1/2)^12)
12 - (1/2 +(1/2)^2 + (1/2)^3 ..)
12 -(1/2)*(1-(1/2)^12)*2
10 years agoHelpfull: Yes(0) No(0)