1,2,3,4,5,6,7,8,9,10,11,12,13从中选4个数,组成24

1,2,3,4,5,6,7,8,9,10,11,12,13从中选4个数,组成24 所有定率全可以用!
要30种!+-×÷自己复制!

第1个回答  推荐于2016-12-02
(2+4)*(12/3)=24
4+5+7+8=24
3+4+8+9=24
2+4+5+13=24
3*(13-2-3)=24
(9-3)+5+13=24
4*[12/(6-3)]=24
(8-4)*(9-3)=24
(7-3)*(8-2)=24
(13-3)+(4-2)=24
(12-6)*(5-1)=24
(11-5)*(1+3)=24
2+3+6+13=24
2+4+6+12=24
2+5+11+6=24
3+4+6+11=24
(13-1)*(4-2)=24
4*7-3-1=24
4*9-13+1=24
4*8-5-3=24
4*5+1+3=24
4*3+13-1=24
4*2+13+3=24
4*1+13+7=24
5*1+12+7=24
5*2+13+1=24
5*3++7+2=24
5*4+1+3=24
5*5+6-7=24
3*9-1-2=24本回答被提问者采纳
第2个回答  2010-02-06
1: (4 - 2) × (5 + 7)
2: 4 ÷ 2 ×(5 + 7)
3: (4 ÷ 2) × (5 + 7)
4: 4 ÷ (2 ÷ (5 + 7))
5: (4 - 2) × (7 + 5)
6: 4 ÷ 2 ×(7 + 5)
7: (4 ÷ 2) × (7 + 5)
8: 4 ÷ (2 ÷ (7 + 5))
9: (4 × (5 + 7)) ÷ 2
10: 4 × (5 + 7) ÷ 2
11: 4 × ((5 + 7) ÷ 2)
12: (4 × (7 + 5)) ÷ 2
13: 4 × (7 + 5) ÷ 2
14: 4 × ((7 + 5) ÷ 2)
15: (5 + 7) ÷ 2 × 4
16: ((5 + 7) ÷ 2) × 4
17: (5 + 7) ÷ (2 ÷ 4)
18: (5 + 7) × (4 - 2)
19: (5 + 7) × 4 ÷ 2
20: ((5 + 7) × 4) ÷ 2
21: (5 + 7) × (4 ÷ 2)
22: (7 + 5) ÷ 2 × 4
23: ((7 + 5) ÷ 2) × 4
24: (7 + 5) ÷ (2 ÷ 4)
25: (7 + 5) × (4 - 2)
26: (7 + 5) × 4 ÷ 2
27: ((7 + 5) × 4) ÷ 2
28: (7 + 5) × (4 ÷ 2)
第3个回答  2010-02-06
2+4+6+12=24
2+5+11+6=24
3+4+6+11=24
(13-1)*(4-2)=24
4*7-3-1=24
4*9-13+1=24
4*8-5-3=24
4*5+1+3=24
4*3+13-1=24
4*2+13+3=24
4*1+13+7=24
5*1+12+7=24
5*2+13+1=24
第4个回答  2012-04-16
9 2 2 1