5,5,10,2.算24点,

问题描述:

5,5,10,2.算24点,

1:5 × (5 - 2 ÷ 10)
2:5 × (5 - (2 ÷ 10))
3:(5 - 2 ÷ 10) × 5
4:(5 - (2 ÷ 10)) × 5