Question

2、9、7、7怎么算24

2、9、7、7怎么算24

Answer 1

如果只用加减乘除括号的话 此问无解

Answer 2

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

1: 4 ÷ (1 - 10 ÷ 12)
2: 4 ÷ (1 - (10 ÷ 12))
3: (4 × (10 - 1)) - 12
4: 4 × (10 - 1) - 12
5: (10 - 1) × 4 - 12
6: ((10 - 1) × 4) - 12
7: (10 ÷ (1 + 4)) × 12
8: 10 ÷ (1 + 4) × 12
9: 10 ÷ ((1 + 4) ÷ 12)
10: (10 ÷ (4 + 1)) × 12
11: 10 ÷ (4 + 1) × 12
12: 10 ÷ ((4 + 1) ÷ 12)
13: 10 × (12 ÷ (1 + 4))
14: 10 × 12 ÷(1 + 4)
15: (10 × 12) ÷ (1 + 4)
16: 10 × (12 ÷ (4 + 1))
17: 10 × 12 ÷(4 + 1)
18: (10 × 12) ÷ (4 + 1)
19: (12 ÷ (1 + 4)) × 10
20: 12 ÷ (1 + 4) × 10
21: 12 ÷ ((1 + 4) ÷ 10)
22: (12 ÷ (4 + 1)) × 10
23: 12 ÷ (4 + 1) × 10
24: 12 ÷ ((4 + 1) ÷ 10)
25: 12 × (10 ÷ (1 + 4))
26: 12 × 10 ÷(1 + 4)
27: (12 × 10) ÷ (1 + 4)
28: 12 × (10 ÷ (4 + 1))
29: 12 × 10 ÷(4 + 1)
30: (12 × 10) ÷ (4 + 1)

1: (1 + 11 × 13) ÷ 6
2: (1 + (11 × 13)) ÷ 6
3: (1 + 13 × 11) ÷ 6
4: (1 + (13 × 11)) ÷ 6
5: (11 × 13 + 1) ÷ 6
6: ((11 × 13) + 1) ÷ 6
7: (13 × 11 + 1) ÷ 6
8: ((13 × 11) + 1) ÷ 6

1: 6 ÷ (1 - 3 ÷ 4)
2: 6 ÷ (1 - (3 ÷ 4))

Answer 3

（7-2）·7-9

Answer 4

不会啊...