2X5 3X C/ 3X D/  5A/ B/  2 515 34X Y

20/ - ON TAP TRAC NGHIEM HOC KI 1
ON TAP TRAC NGHIEM HOC KI 1

20/ Chọn cõu đỳng:

2

x

5

3

x

C/

3

x

D/

 

5

A/

B/

 

2

5

15

34

x

y