4 5 7 10怎样算24点

如题所述

第1个回答  2011-06-05
1: 4 - (5 - 7) × 10
2: 4 - ((5 - 7) × 10)
3: 4 + (7 - 5) × 10
4: 4 + ((7 - 5) × 10)
5: 4 - (10 × (5 - 7))
6: 4 - 10 ×(5 - 7)
7: 4 + (10 × (7 - 5))
8: 4 + 10 ×(7 - 5)
9: (7 - 5) × 10 + 4
10: ((7 - 5) × 10) + 4
11: (10 × (7 - 5)) + 4
12: 10 × (7 - 5) + 4
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第2个回答  2011-06-12
1: 4 - (5 - 7) × 10
2: 4 - ((5 - 7) × 10)
3: 4 + (7 - 5) × 10
4: 4 + ((7 - 5) × 10)
5: 4 - (10 × (5 - 7))
6: 4 - 10 ×(5 - 7)
7: 4 + (10 × (7 - 5))
8: 4 + 10 ×(7 - 5)
9: (7 - 5) × 10 + 4
10: ((7 - 5) × 10) + 4
11: (10 × (7 - 5)) + 4
12: 10 × (7 - 5) + 4

参考资料:脑子

第3个回答  2011-06-04
(7-5)*10+4=24
第4个回答  2011-06-07
7-5=2
2×10+4=24
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