A.\( - 1.\)    
B.\( - 3.\)     
C.\(2.\)      
D.\(3.\)

A.\( - 30.\)    
B.\( - 50.\)     
C.\(15.\)     
D.\(25.\)

A.\(2020.\)    
B.\(2018.\)     
C.\(2016.\)    
D.\(2022.\)

A.\(( - 3;4).\)
B.\((3;2).\)
C.\((5;8).\)
D.\((5;4).\)

A.\(6.\)     
B.\(3.\)      
C.\(2.\)      
D.\(5.\)

A.\(\dfrac{\pi }{{1000}}.\)   
B.\(\dfrac{\pi }{2}.\)     
C.\(\dfrac{{{\pi ^2}}}{2}.\)    
D.\(\dfrac{{{\pi ^2}}}{{1000}}.\)

A.30  
B.31  
C.5  
D.10

A.\(S = \left\{ {0;1} \right\}\)                      
B.\(S = \left\{ {\dfrac{{1 - \sqrt 5 }}{2};\dfrac{{1 + \sqrt 5 }}{2}} \right\}\)
C.\(S = \left\{ { - 1;\dfrac{1}{2}} \right\}\)                          
D.\(S = \left\{ {\dfrac{{ - 1}}{2};1} \right\}\)

A.\(m \le 3\)                    
B.\(m \ge 3\)                     
C.\(m < 3\)                         
D.\(m > 3\)

A.\(10\pi \)                    
B.10                    
C.\(5\pi \)                          
D.5