4 5 1 8 算24点!

题目

4 5 1 8 算24点!

答案

1:(4 × (5 - 1)) + 8
2:4 × (5 - 1) + 8
3:(5 - 1) × 4 + 8
4:((5 - 1) × 4 ) + 8
5:(5 + 1) × (8 - 4 )
6:(1 + 5) × (8 - 4 )
7:8 + (4 × (5 - 1))
8:8 + 4 ×(5 - 1)
9:(8 - 4 ) × (5 + 1)
10:(8 - 4 ) × (1 + 5)
11:8 - (4 × (1 - 5))
12:8 - 4 ×(1 - 5)
13:8 + (5 - 1) × 4
14:8 + ((5 - 1) × 4 )
15:8 - (1 - 5) × 4
16:8 - ((1 - 5) × 4 )