三个五,一个一,求24点.求24点解法

三个五,一个一,求24点.
求24点解法

1:5 × (5 - 1 ÷ 5)
2:5 × (5 - (1 ÷ 5))
3:5 × (5 - 1 ÷ 5 )
4:5 × (5 - (1 ÷ 5 ))
5:(5 - 1 ÷ 5 ) × 5
6:(5 - (1 ÷ 5 )) × 5
7:(5 - 1 ÷ 5) × 5
8:(5 - (1 ÷ 5)) × 5
9:5 × (5 - 1 ÷ 5)
10:5 × (5 - (1 ÷ 5))
11:(5 - 1 ÷ 5) × 5
12:(5 - (1 ÷ 5)) × 5