문제 2선택형6×3106\times\frac{3}{10}6×1031451\frac451541251\frac2515263106\frac{3}{10}61033253\frac25352
문제 4선택형9×5129\times\frac{5}{12}9×12595129\frac{5}{12}91251141\frac141413343\frac34343555