# 1Multiple Choice910×23×39=\frac{9}{10}\times\frac23\times\frac39=109×32×93=54270\frac{54}{270}2705497100\frac{97}{100}10097배지훈
# 5Multiple Choice15×28\frac15\times\frac2851×82240\frac{2}{40}402145\frac{1}{45}451