Trova i l numero mancante.

x
x
x
x
x
:
:
:
:
:
11
11
11
11
11
=
=
=
=
=
3
5
6
7
9
x
x
x
x
x
:
:
:
:
:
12
12
12
12
12
=
=
=
=
=
3
4
2
3
5
x
x
x
x
x
:
:
:
:
:
14
12
15
22
33
=
=
=
=
=
2
1
1
2
2
x
x
x
x
x
:
:
:
:
:
41
21
21
21
21
=
=
=
=
=
2
2
3
4
1
x
x
x
x
x
:
:
:
:
:
29
32
24
42
45
=
=
=
=
=
2
2
2
2
1
 

 

Trova i l numero mancante.

x
x
x
x
x
:
:
:
:
:
11
11
11
11
11
=
=
=
=
=
3
5
6
7
9
x
x
x
x
x
:
:
:
:
:
12
12
12
12
12
=
=
=
=
=
3
4
2
3
5
x
x
x
x
x
:
:
:
:
:
14
12
15
22
33
=
=
=
=
=
2
1
1
2
2
x
x
x
x
x
:
:
:
:
:
41
21
21
21
21
=
=
=
=
=
2
2
3
4
1
x
x
x
x
x
:
:
:
:
:
29
32
24
42
45
=
=
=
=
=
2
2
2
2
1