5`5`5`3.算24点

5556吧
1: 5 + 5 × 5 - 6
2: (5 + 5 × 5) - 6
3: (5 + (5 × 5)) - 6
4: 5 + (5 × 5) - 6
5: 5 + (5 × 5 - 6)
6: 5 + ((5 × 5) - 6)
7: (5 - 5 ÷ 5) × 6
8: (5 - (5 ÷ 5)) × 6
9: 5 × 5 + 5 - 6
10: (5 × 5) + 5 - 6
11: (5 × 5 + 5) - 6
12: ((5 × 5) + 5) - 6
13: 5 × 5 +(5 - 6)
14: (5 × 5) + (5 - 6)
15: 5 × 5 - 6 + 5
16: (5 × 5) - 6 + 5
17: (5 × 5 - 6) + 5
18: ((5 × 5) - 6) + 5
19: 5 × 5 -(6 - 5)
20: (5 × 5) - (6 - 5)
21: 5 - 6 + 5 × 5
22: (5 - 6) + 5 × 5
23: 5 - 6 +(5 × 5)
24: (5 - 6) + (5 × 5)
25: 5 - (6 - 5 × 5)
26: 5 - (6 - (5 × 5))
27: 6 × (5 - 5 ÷ 5)
28: 6 × (5 - (5 ÷ 5))