用2，6，7，8凑成24点，不重复

1: (2 - 6 + 7) × 8
2: ((2 - 6) + 7) × 8
3: (2 - (6 - 7)) × 8
4: (2 + 7 - 6) × 8
5: ((2 + 7) - 6) × 8
6: (2 + (7 - 6)) × 8
7: (2 × (7 + 8)) - 6
8: 2 × (7 + 8) - 6
9: (2 × (8 + 7)) - 6
10: 2 × (8 + 7) - 6
11: (7 + 2 - 6) × 8
12: ((7 + 2) - 6) × 8
13: (7 + (2 - 6)) × 8
14: (7 - 6 + 2) × 8
15: ((7 - 6) + 2) × 8
16: (7 - (6 - 2)) × 8
17: (7 + 8) × 2 - 6
18: ((7 + 8) × 2) - 6
19: 8 × (2 - 6 + 7)
20: 8 × ((2 - 6) + 7)
21: 8 × (2 - (6 - 7))
22: 8 × (2 + 7 - 6)
23: 8 × ((2 + 7) - 6)
24: 8 × (2 + (7 - 6))
25: (8 + 7) × 2 - 6
26: ((8 + 7) × 2) - 6
27: 8 × (7 + 2 - 6)
28: 8 × ((7 + 2) - 6)
29: 8 × (7 + (2 - 6))
30: 8 × (7 - 6 + 2)
31: 8 × ((7 - 6) + 2)
32: 8 × (7 - (6 - 2))
这考的是我们的计算能力，要有数感，24点始于何年何月已无从考究，但它以自己独具的数学魅力和丰富的内涵正逐渐被越来越多的人们所接受。这种游戏方式简单易学，能健脑益智，是一项极为有益的活动。我们只要多做一些24点，就能对这些题目有感觉，做得更好，更快。

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