Question

数字 2,7,4,5,怎么样让这几个数得24点 加减乘除都可以用

Answer 1

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

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Answer 2

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

Answer 3

（5+7）*(4-2)

Answer 4

(5+7)*(4-2)