What does this equal?

Question

http://img228.imageshack.us/img228/8715/untitledkl4.jpg

Answer 1

0.002 + e^(iπ) + Σ1/2^n (for n = 1 to ∞) =
0.002 - 1 + 1 = 0.002

Answer 2

e^ipi = -1
the sum = 1 thus total 0.002

Answer 3

0.002 + e^(i pi) + (1/2)/[1-(1/2)] = 0.002 - 1 + 1 = 0.002