9 9 2 6,这四个数字算24各位帮帮忙啦!

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9 9 2 6,这四个数字算24各位帮帮忙啦!
9 9 2 6,这四个数字算24
各位帮帮忙啦!

9 9 2 6,这四个数字算24各位帮帮忙啦!
2*(9-6+9)=24

1: (9 + 9 - 6) × 2
2: ((9 + 9) - 6) × 2
3: (9 + (9 - 6)) × 2
4: 9 × (2 + 6 ÷ 9)
5: 9 × (2 + (6 ÷ 9))
6: (9 - 6 + 9) × 2
7: ((9 - 6) + 9) × 2
8: (9 - (6 - 9)) × 2

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1: (9 + 9 - 6) × 2
2: ((9 + 9) - 6) × 2
3: (9 + (9 - 6)) × 2
4: 9 × (2 + 6 ÷ 9)
5: 9 × (2 + (6 ÷ 9))
6: (9 - 6 + 9) × 2
7: ((9 - 6) + 9) × 2
8: (9 - (6 - 9)) × 2
9: 9 × (6 ÷ 9 + 2)
10: 9 × ((6 ÷ 9) + 2)
11: 2 × (9 + 9 - 6)
12: 2 × ((9 + 9) - 6)
13: 2 × (9 + (9 - 6))
14: 2 × (9 - 6 + 9)
15: 2 × ((9 - 6) + 9)
16: 2 × (9 - (6 - 9))
17: (2 + 6 ÷ 9) × 9
18: (2 + (6 ÷ 9)) × 9
19: (6 ÷ 9 + 2) × 9
20: ((6 ÷ 9) + 2) × 9

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