
Trả lời:
...=..., ...=..., ...=..., ...=..., ...=..., ...=..., ...=..., ...=..., ...=..., ...=...1=19; 2=8; 3=9; 4= 5; 6=20; 7=12; 10=14; 11=13; 15=16; 17=18

Trả lời:
...=..., ...=..., ...=..., ...=..., ...=..., ...=..., ...=..., ...=..., ...=..., ...=...1=19; 2=8; 3=9; 4= 5; 6=20; 7=12; 10=14; 11=13; 15=16; 17=18