1:10 × (2 + 4 ÷ 10) = 242:10 × (2 + (4 ÷ 10))= 243:10 × (4 ÷ 10 + 2)= 244:10 × ((4 ÷ 10) + 2)= 245:(2 + 4 ÷ 10) × 10= 246:(2 + (4 ÷ 10)) × 10= 247:(4 ÷ 10 + 2) × 10= 248:((4 ÷ 10) + 2) × 10= 24 解析看不懂...
1.10×[﹙4÷10﹚＋2]2.[2＋﹙4÷10﹚]×10 3.[﹙4÷10﹚＋2]×10 （10-10）+24=24(4/10+2)*10=24