算24点题目:11,11,1,5;8,5,2,7;1,4,5,6

（11*11-1）/5=24
8*（2*5-7）=24
6/（5/4-1）=24

11, 11, 1, 5的24点答案

1: (11 × 11 - 1) ÷ 5
2: ((11 × 11) - 1) ÷ 5

8, 5, 2, 7的24点答案：

1: 8 × (5 × 2 - 7)
2: 8 × ((5 × 2) - 7)
3: 8 × (2 × 5 - 7)
4: 8 × ((2 × 5) - 7)
5: (5 × 2 - 7) × 8
6: ((5 × 2) - 7) × 8
7: (2 × 5 - 7) × 8
8: ((2 × 5) - 7) × 8

1, 4, 5, 6的24点答案：

1: 4 ÷ (1 - 5 ÷ 6)
2: 4 ÷ (1 - (5 ÷ 6))
3: 6 ÷ (5 ÷ 4 - 1)
4: 6 ÷ ((5 ÷ 4) - 1)

第一组
1: (11 × 11 - 1) ÷ 5
2: ((11 × 11) - 1) ÷ 5
第二组
1: (5 ÷ 5 + 2) × 8
2: ((5 ÷ 5) + 2) × 8
3: 8 × (5 ÷ 5 + 2)
4: 8 × ((5 ÷ 5) + 2)
5: 8 × (2 + 5 ÷ 5)
6: 8 × (2 + (5 ÷ 5))
7: (2 + 5 ÷ 5) × 8
8: (2 + (5 ÷ 5)) × 8
第三组
1: 4 ÷ (1 - 5 ÷ 6)
2: 4 ÷ (1 - (5 ÷ 6))
3: 6 ÷ (5 ÷ 4 - 1)
4: 6 ÷ ((5 ÷ 4) - 1)

（11 × 11 - 1) ÷ 5

8 × (5 × 2 - 7)

4 ÷ (1 - 5 ÷ 6) <