7，7，5，8怎么算24点~~~帮忙算一下~~谢谢

可以用非加减乘除的方法吗？

如果可以，则有

3根8=2

1: 7 + 7 + 5 × 2
2: (7 + 7) + 5 × 2
3: 7 + (7 + 5 × 2)
4: 7 + (7 + (5 × 2))
5: 7 + 7 +(5 × 2)
6: (7 + 7) + (5 × 2)
7: 7 + 7 + 2 × 5
8: (7 + 7) + 2 × 5
9: 7 + (7 + 2 × 5)
10: 7 + (7 + (2 × 5))
11: 7 + 7 +(2 × 5)
12: (7 + 7) + (2 × 5)
13: 7 + 5 × 2 + 7
14: (7 + 5 × 2) + 7
15: (7 + (5 × 2)) + 7
16: 7 + (5 × 2) + 7
17: 7 + (5 × 2 + 7)
18: 7 + ((5 × 2) + 7)
19: 7 + 2 × 5 + 7
20: (7 + 2 × 5) + 7
21: (7 + (2 × 5)) + 7
22: 7 + (2 × 5) + 7
23: 7 + (2 × 5 + 7)
24: 7 + ((2 × 5) + 7)
25: 5 × 2 + 7 + 7
26: (5 × 2) + 7 + 7
27: (5 × 2 + 7) + 7
28: ((5 × 2) + 7) + 7
29: 5 × 2 +(7 + 7)
30: (5 × 2) + (7 + 7)
31: 2 × 5 + 7 + 7
32: (2 × 5) + 7 + 7
33: (2 × 5 + 7) + 7
34: ((2 × 5) + 7) + 7
35: 2 × 5 +(7 + 7)
36: (2 × 5) + (7 + 7)

除非 3次开方 要不然 无解

呵呵，这道题按照正常的加减乘除是无法算出来的，

哈哈，这是扑克算24中的一幅绝算式哈。

无解