2, 5, 5, 10的24点答案:
1: (5 - 2 ÷ 10) × 5 =24
2: (5 - (2 ÷ 10)) × 5=24
3: 5 × (5 - 2 ÷ 10)=24
4: 5 × (5 - (2 ÷ 10))=24