Question

2,2,6,9和1,5,5,5和5,2,1,1数学24怎么做？ 急！!

Answer 1

（1）
1: (2 + 6 ÷ 9) × 9
2: (2 + (6 ÷ 9)) × 9
3: 2 × (9 - 6 + 9)
4: 2 × ((9 - 6) + 9)
5: 2 × (9 - (6 - 9))
6: 2 × (9 + 9 - 6)
7: 2 × ((9 + 9) - 6)
8: 2 × (9 + (9 - 6))
9: (6 ÷ 9 + 2) × 9
10: ((6 ÷ 9) + 2) × 9
11: 9 × (2 + 6 ÷ 9)
12: 9 × (2 + (6 ÷ 9))
13: (9 - 6 + 9) × 2
14: ((9 - 6) + 9) × 2
15: (9 - (6 - 9)) × 2
16: 9 × (6 ÷ 9 + 2)
17: 9 × ((6 ÷ 9) + 2)
18: (9 + 9 - 6) × 2
19: ((9 + 9) - 6) × 2
20: (9 + (9 - 6)) × 2
（2）
5*(5-1/5)=24
5*(5-(1/5))=24
5*(5-1/5)=24
5*(5-(1/5))=24
(5-1/5)*5=24
(5-(1/5))*5=24
(5-1/5)*5=24
(5-(1/5))*5=24
5*(5-1/5)=24
5*(5-(1/5))=24
5*(5-1/5)=24
5*(5-(1/5))=24
(5-1/5)*5=24
(5-(1/5))*5=24
(5-1/5)*5=24
(5-(1/5))*5=24
5*(5-1/5)=24
5*(5-(1/5))=24
5*(5-1/5)=24
5*(5-(1/5))=24
(5-1/5)*5=24
(5-(1/5))*5=24
(5-1/5)*5=24
(5-(1/5))*5=24

（3） 52 11 目前不知道 望及时采纳谢谢！ 知道后 回你评论 有一个不规范的 5^2-1*1=24

Answer 2

上面那位网友已经有前面的回答了，我回答下第三个5的二次方减去1再把前面的括起来乘以1，这样算行不行？

Answer 3

第一个2乘9等于18减6等于12乘2。。。只能用加减乘除么？后两个这样有点。。

Answer 4

（1）
1: (2 + 6 ÷ 9) × 9 2: (2 + (6 ÷ 9)) × 9 3: 2 × (9 - 6 + 9) 4: 2 × ((9 - 6) + 9) 5: 2 × (9 - (6 - 9)) 6: 2 × (9 + 9 - 6) 7: 2 × ((9 + 9) - 6) 8: 2 × (9 + (9 - 6)) 9: (6 ÷ 9 + 2) × 9 10: ((6 ÷ 9) + 2) × 9 11: 9 × (2 + 6 ÷ 9) 12: 9 × (2 + (6 ÷ 9)) 13: (9 - 6 + 9) × 2 14: ((9 - 6) + 9) × 2 15: (9 - (6 - 9)) × 2 16: 9 × (6 ÷ 9 + 2) 17: 9 × ((6 ÷ 9) + 2) 18: (9 + 9 - 6) × 2 19: ((9 + 9) - 6) × 2 20: (9 + (9 - 6)) × 2
（2） 5*(5-1/5)=24 5*(5-(1/5))=24 5*(5-1/5)=24
5*(5-(1/5))=24

Answer 5

额不会，凑题目的