1:(2 - 1 + 5) × 42:((2 - 1) + 5) × 43:(2 - (1 - 5)) × 44:(2 + 4) × (5 - 1)5:(2 + 5 - 1) × 46:((2 + 5) - 1) × 47:(2 + (5 - 1)) × 48:4 × (2 - 1 + 5)9:4 × ((2 - 1) + 5)10:4 × (2 - (1 - 5))11:(4...