Ответ:
The flags are matched as follows:
- the USA — flag 1
- Poland — flag 2
- Britain — flag 3
- Canada — flag 4
- France — flag 5
- Mexico — flag 6
- China — flag 7
- Ireland — flag 8
- Russia — flag 9
- Argentina — flag 10
- Australia — flag 11
The three flags not in the picture are Spain, Scotland and Wales.
Answer: Spain, Scotland and Wales.
