Question

2、7、9、9如何算出24点

Answer 1

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

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

Answer 3

正规加减乘除方法没有
用根号之类的可以