Latest GRE Aptitude Question SOLUTION: If z = e^(2*Pi*i/5), then 1 + z + z^2 + z^3 + 5z^4 + 4z^5 ++4z^6 + 4z^7 + 4z^8 + 5z^9 = ? (A) 0 (B) 4e^(3*Pi*i/5) (C) 5e^(4*Pi*i/5) (D) – 4e^(2*Pi*i/5) (E) – 5e^(3*Pi*i)/5