1个2,1个4,2个10用加减乘除括号使结果等于24
问题描述：
1个2,1个4,2个10用加减乘除括号使结果等于24
答
1:(4 ÷ 10 + 2) × 10
2:((4 ÷ 10) + 2) × 10
3:(2 + 4 ÷ 10) × 10
4:(2 + (4 ÷ 10)) × 10
5:10 × (4 ÷ 10 + 2)
6:10 × ((4 ÷ 10) + 2)
7:10 × (2 + 4 ÷ 10)
8:10 × (2 + (4 ÷ 10))