2 2 5 9怎样算24
1个回答

1: 2 × (5 - 2 + 9)

2: 2 × ((5 - 2) + 9)

3: 2 × (5 - (2 - 9))

4: 2 × (5 + 9 - 2)

5: 2 × ((5 + 9) - 2)

6: 2 × (5 + (9 - 2))

7: 2 × (9 - 2 + 5)

8: 2 × ((9 - 2) + 5)

9: 2 × (9 - (2 - 5))

10: 2 × (9 + 5 - 2)

11: 2 × ((9 + 5) - 2)

12: 2 × (9 + (5 - 2))

13: (5 - 2 + 9) × 2

14: ((5 - 2) + 9) × 2

15: (5 - (2 - 9)) × 2

16: (5 + 9 - 2) × 2

17: ((5 + 9) - 2) × 2

18: (5 + (9 - 2)) × 2

19: (9 - 2 + 5) × 2

20: ((9 - 2) + 5) × 2

21: (9 - (2 - 5)) × 2

22: (9 + 5 - 2) × 2

23: ((9 + 5) - 2) × 2

24: (9 + (5 - 2)) × 2

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