4.5.7.6算24点.多算几种

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4.5.7.6算24点.多算几种
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4.5.7.6算24点.多算几种
4.5.7.6算24点.多算几种

4.5.7.6算24点.多算几种
1: 4 × (5 - 6 + 7)
2: 4 × ((5 - 6) + 7)
3: 4 × (5 - (6 - 7))
4: 4 × (5 + 7 - 6)
5: 4 × ((5 + 7) - 6)
6: 4 × (5 + (7 - 6))
7: 4 × (7 + 5 - 6)
8: 4 × ((7 + 5) - 6)
9: 4 × (7 + (5 - 6))
10: 4 × (7 - 6 + 5)
11: 4 × ((7 - 6) + 5)
12: 4 × (7 - (6 - 5))
13: (5 - 6 + 7) × 4
14: ((5 - 6) + 7) × 4
15: (5 - (6 - 7)) × 4
16: (5 + 7 - 6) × 4
17: ((5 + 7) - 6) × 4
18: (5 + (7 - 6)) × 4
19: (5 + 7) × (6 - 4)
20: (6 - 4) × (5 + 7)
21: (6 - 4) × (7 + 5)
22: (7 + 5 - 6) × 4
23: ((7 + 5) - 6) × 4
24: (7 + (5 - 6)) × 4
25: (7 + 5) × (6 - 4)
26: (7 - 6 + 5) × 4
27: ((7 - 6) + 5) × 4
28: (7 - (6 - 5)) × 4

4*（5+7-6）

(7-6+5)乘以4=24
6-4乘以5+7=24

4乘(5减6加7)=24

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

全部展开

1: 4 × (5 - 6 + 7)
2: 4 × ((5 - 6) + 7)
3: 4 × (5 - (6 - 7))
4: 4 × (5 + 7 - 6)
5: 4 × ((5 + 7) - 6)
6: 4 × (5 + (7 - 6))
7: 4 × (7 + 5 - 6)
8: 4 × ((7 + 5) - 6)
9: 4 × (7 + (5 - 6))
10: 4 × (7 - 6 + 5)
11: 4 × ((7 - 6) + 5)
12: 4 × (7 - (6 - 5))
13: (5 - 6 + 7) × 4
14: ((5 - 6) + 7) × 4
15: (5 - (6 - 7)) × 4
16: (5 + 7 - 6) × 4
17: ((5 + 7) - 6) × 4
18: (5 + (7 - 6)) × 4
19: (5 + 7) × (6 - 4)
20: (6 - 4) × (5 + 7)
21: (6 - 4) × (7 + 5)
22: (7 + 5 - 6) × 4
23: ((7 + 5) - 6) × 4
24: (7 + (5 - 6)) × 4
25: (7 + 5) × (6 - 4)
26: (7 - 6 + 5) × 4
27: ((7 - 6) + 5) × 4 4*（5+7-6）
28: (7 - (6 - 5)) × 4

收起

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