Bài 1: Chọn các cặp bằng nhau. Câu 1:

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

Trả lời:
...=..., ...=..., ...=..., ...=..., ...=..., ...=..., ...=..., ...=..., ...=..., ...=...1=17, 2=3, 4=11, 5=7, 6=19, 8=18, 9=20, 10=13, 12=14, 15=16.
Đáp án là:
Bài 1: Chọn các cặp bằng nhau. Câu 1:

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

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