3 4 9 11 算24请各位高手帮忙,谢谢
3个回答

共有22种:

1:3 × (4 × (11 - 9))

2:3 × 4 ×(11 - 9)

3:(3 × 4) × (11 - 9)

4:(3 × (11 - 9)) × 4

5:3 × (11 - 9) × 4

6:3 × ((11 - 9) × 4)

7:4 × (3 × (11 - 9))

8:4 × 3 ×(11 - 9)

9:(4 × 3) × (11 - 9)

10:(4 × (11 - 9)) × 3

11:4 × (11 - 9) × 3

12:4 × ((11 - 9) × 3)

13:(9 × 11 - 3) ÷ 4

14:((9 × 11) - 3) ÷ 4

15:(11 - 9) × 3 × 4

16:((11 - 9) × 3) × 4

17:(11 - 9) × (3 × 4)

18:(11 × 9 - 3) ÷ 4

19:((11 × 9) - 3) ÷ 4

20:(11 - 9) × 4 × 3

21:((11 - 9) × 4) × 3

22:(11 - 9) × (4 × 3)