A.
B.
C.
D.

A.
B.
C.
D.

A.\(C_{10}^2.\)      
B.\(A_{10}^2\)       
C.\({10^2}.\)             
D.\({2^{10}}.\)

A.\(6.\)                
B.\(3.\)                
C.\(12.\)                    
D.\( - 6.\)

A.\(x = 4\).              
B.\(x = 3.\)                   
C.\(x = 2.\)          
D.\(x = 1.\)

A.\(6\).                         
B.\(8.\)                             
C.\(4.\)                   
D.\(2.\)

A.\(\left[ {0; + \infty ).} \right.\)          
B.\(\left( { - \infty ; + \infty } \right).\)   
C.\(\left( {0; + \infty } \right).\)          
D.\(\left[ {2; + \infty ).} \right.\)

A.\(F'\left( x \right) =  - f\left( x \right),\forall \,x \in K.\)                          
B.\(f'\left( x \right) = F\left( x \right),\forall \,x \in K.\)             
C.\(F'\left( x \right) = f\left( x \right),\forall \,x \in K.\)   
D.\(f'\left( x \right) =  - F\left( x \right),\forall \,x \in K.\)

A.\(6.\)                             
B.\(12\).           
C.\(36.\)                      
D.\(4.\)

A.\(16\pi .\)                       
B.\(48\pi .\)               
C.\(36\pi .\)               
D.\(4\pi .\)