Chọn câu sai

$20$                         

$- 17$                            

$- 18$                          

$- 20$

$- 7; - 6; - 4;0;3;14$   

$- 4; - 6; - 7;0;3;14$

$14;3;0; - 4; - 6; - 7$   

$- 6; - 7; - 4;0;3;14$

$A = \left\{ { - 8; - 7; - 6; - 5; - 4; - 3; - 2; - 1} \right\}$                        

$A = \left\{ { - 9; - 8; - 7; - 6; - 5; - 4; - 3; - 2; - 1} \right\}$

$A = \left\{ { - 9; - 8; - 7; - 6; - 5; - 4; - 3; - 2; - 1;0} \right\}$               

$A = \left\{ { - 8; - 7; - 6; - 5; - 4; - 3; - 2; - 1;0} \right\}$

$- 12$    

$- 11$            

$- 10$            

$12$

$6$    

$5$  

$4$ 

$7$