(0.9 * 0.9 * 0.9 + 0.8 * 0.8 * 0.8) / (1.6 * 1.6 * 1.6 + 1.8 * 1.8 * 1.8) = ? 0.5 0.625 0.25 0.125 TRUE ANSWER : ? YOUR ANSWER : ?