1,2,7,8如何算24点

1,2,7,8如何算24点

1:1 + 2 × 8 + 7
2:(1 + 2 × 8) + 7
3:(1 + (2 × 8)) + 7
4:1 + (2 × 8) + 7
5:1 + (2 × 8 + 7)
6:1 + ((2 × 8) + 7)
7:1 + 7 + 2 × 8
8:(1 + 7) + 2 × 8
9:1 + (7 + 2 × 8)
10:1 + (7 + (2 × 8))
11:1 + 7 +(2 × 8)
12:(1 + 7) + (2 × 8)
13:(1 + 7) × 2 + 8
14:((1 + 7) × 2) + 8
15:1 + 7 + 8 × 2
16:(1 + 7) + 8 × 2
17:1 + (7 + 8 × 2)
18:1 + (7 + (8 × 2))
19:1 + 7 +(8 × 2)
20:(1 + 7) + (8 × 2)
21:1 + 8 × 2 + 7
22:(1 + 8 × 2) + 7
23:(1 + (8 × 2)) + 7
24:1 + (8 × 2) + 7
25:1 + (8 × 2 + 7)
26:1 + ((8 × 2) + 7)
27:(2 × (1 + 7)) + 8
28:2 × (1 + 7) + 8
29:(2 × (7 + 1)) + 8
30:2 × (7 + 1) + 8
31:2 × 8 + 1 + 7
32:(2 × 8) + 1 + 7
33:(2 × 8 + 1) + 7
34:((2 × 8) + 1) + 7
35:2 × 8 +(1 + 7)
36:(2 × 8) + (1 + 7)
37:2 × 8 + 7 + 1
38:(2 × 8) + 7 + 1
39:(2 × 8 + 7) + 1
40:((2 × 8) + 7) + 1
41:2 × 8 +(7 + 1)
42:(2 × 8) + (7 + 1)
43:7 + 1 + 2 × 8
44:(7 + 1) + 2 × 8
45:7 + (1 + 2 × 8)
46:7 + (1 + (2 × 8))
47:7 + 1 +(2 × 8)
48:(7 + 1) + (2 × 8)
49:(7 + 1) × 2 + 8
50:((7 + 1) × 2) + 8
51:(7 - 1) ÷ 2 × 8
52:((7 - 1) ÷ 2) × 8
53:(7 - 1) ÷ (2 ÷ 8)
54:7 + 1 + 8 × 2
55:(7 + 1) + 8 × 2
56:7 + (1 + 8 × 2)
57:7 + (1 + (8 × 2))
58:7 + 1 +(8 × 2)
59:(7 + 1) + (8 × 2)
60:(7 - 1) × 8 ÷ 2
61:((7 - 1) × 8) ÷ 2
62:(7 - 1) × (8 ÷ 2)
63:7 + 2 × 8 + 1
64:(7 + 2 × 8) + 1
65:(7 + (2 × 8)) + 1
66:7 + (2 × 8) + 1
67:7 + (2 × 8 + 1)
68:7 + ((2 × 8) + 1)
69:7 + 8 × 2 + 1
70:(7 + 8 × 2) + 1
71:(7 + (8 × 2)) + 1
72:7 + (8 × 2) + 1
73:7 + (8 × 2 + 1)
74:7 + ((8 × 2) + 1)
75:8 + (1 + 7) × 2
76:8 + ((1 + 7) × 2)
77:8 + (2 × (1 + 7))
78:8 + 2 ×(1 + 7)
79:8 × 2 + 1 + 7
80:(8 × 2) + 1 + 7
81:(8 × 2 + 1) + 7
82:((8 × 2) + 1) + 7
83:8 × 2 +(1 + 7)
84:(8 × 2) + (1 + 7)
85:8 + (2 × (7 + 1))
86:8 + 2 ×(7 + 1)
87:8 × 2 + 7 + 1
88:(8 × 2) + 7 + 1
89:(8 × 2 + 7) + 1
90:((8 × 2) + 7) + 1
91:8 × 2 +(7 + 1)
92:(8 × 2) + (7 + 1)
93:8 ÷ 2 ×(7 - 1)
94:(8 ÷ 2) × (7 - 1)
95:8 ÷ (2 ÷ (7 - 1))
96:8 + (7 + 1) × 2
97:8 + ((7 + 1) × 2)
98:(8 × (7 - 1)) ÷ 2
99:8 × (7 - 1) ÷ 2
100:8 × ((7 - 1) ÷ 2)