1:5 × (5 - 5 ÷5÷ 5) =24%A2:5 × (5 - (5÷5 ÷ 5)) =24%A3:(5 - 5÷5 ÷ 5) × 5=24%A4:(5 - (5÷5 ÷ 5)) × 5=24