Which number can be placed at the sign of interrogation?
|
5 |
7 |
4 |
|
2 |
6 |
8 |
|
3 |
7 |
9 |
|
13 |
49 |
? |
1
31
2
41
3
35
4
40
Which number can be placed at the sign of interrogation?
|
5 |
7 |
4 |
|
2 |
6 |
8 |
|
3 |
7 |
9 |
|
13 |
49 |
? |