急求！！！24点题目．

我C咧.就4个数的24点没有甚么比较难的题目....下面的也不算难的,就转那么一个小弯而已
1,5,5,5 就 (5－1÷5)×5
4,4,10,10 就(10×10－4)÷4
8,8,3,3 就8÷(3－8÷3)
3,3,7,7 就(3÷7＋3)×7
6,5,4,1 就6÷(5÷4－1)
6,7,9,9 就6×7－(9＋9)
4,4,7,7 就(4-4/7)×7
3,8,8,10 就忘了 懒德想
还有我是第一个发表的 楼下的别雷同 谢谢合作

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