A.\(\left( {21;28} \right)\)
B.\(\left( {15;21} \right)\)
C.\(\left( { - 10;1} \right)\)
D.\(\left( {1;9} \right)\)

A.\(2010 < m < 2015\)
B.\(m < 2010\)
C.\(m > 2025\)
D.\(2015 < m < 2025\)

A.\(\dfrac{{a\sqrt 7 }}{7}\)
B.\(\dfrac{{a\sqrt 3 }}{4}\)
C.\(\dfrac{{a\sqrt {15} }}{5}\)
D.\(\dfrac{a}{2}\)

A.\(P = \dfrac{{27}}{{406}}\)
B.\(P = \dfrac{{33}}{{406}}\)  
C.\(P = \dfrac{{57}}{{406}}\)
D.\(P = \dfrac{{23}}{{406}}\)

A.3
B.4
C.1
D.2

A.\(S = \left( {2 + 2\sqrt 2 } \right)\pi {a^2}\)
B.\(S = \left( {4 + 2\sqrt 2 } \right)\pi {a^2}\)
C.\(S = \left( {2 + 4\sqrt 2 } \right)\pi {a^2}\)
D.\(S = \left( {4 + 4\sqrt 2 } \right)\pi {a^2}\)

A.\(T = 0\)
B.\(T = 10\)
C.\(T = 6\)
D.\(T =  - 3\)

A.\({V_{\max }} = \dfrac{{8\sqrt 3 {R^3}}}{9}\)
B.\({V_{\max }} = \dfrac{{16\sqrt 3 {R^3}}}{{27}}\)
C.\({V_{\max }} = \dfrac{{8\sqrt 3 {R^3}}}{{27}}\)
D.\({V_{\max }} = \dfrac{{3\sqrt 3 {R^3}}}{8}\)

A.\(4x + 3y + 5z - 8 = 0\)                
B.\(2x + 3y + z - 4 = 0\)
C.\(4x + 5y + 3z - 8 = 0\)               
D.\(3x - 2y + 8z - 6 = 0\)

A.\(\dfrac{{13{a^3}}}{4}\)
B.\(\dfrac{{27{a^3}}}{8}\)
C.\(\dfrac{{25{a^3}}}{9}\)
D.\(\dfrac{{10{a^3}}}{3}\)