A.\(\overrightarrow b  = \left( {1;1;0} \right)\)
B.\(\overrightarrow c  = \left( { - 2;2;2} \right)\)
C.\(\overrightarrow d  = \left( { - 1;2;1} \right)\)
D.\(\overrightarrow a  = \left( { - 1;1;0} \right)\)

A.\({x^2} + {\left( {y - 1} \right)^2} + {z^2} = 9.\) 
B.\({\left( {x - 2} \right)^2} + {\left( {y + 1} \right)^2} + {\left( {z + 1} \right)^2} = 9.\)
C.\({\left( {x + 2} \right)^2} + {\left( {y - 1} \right)^2} + {\left( {z - 1} \right)^2} = 9.\)
D.\({x^2} + {\left( {y + 1} \right)^2} + {z^2} = 9.\)

A.\(\dfrac{{x + 5}}{1} = \dfrac{{y - 3}}{{ - 2}} = \dfrac{{z + 2}}{1}\)
B.\(\dfrac{{x - 5}}{1} = \dfrac{{y + 3}}{{ - 2}} = \dfrac{{z - 2}}{{ - 1}}\)
C.\(\dfrac{{x - 6}}{1} = \dfrac{{y + 5}}{{ - 2}} = \dfrac{{z - 3}}{1}\)
D.\(\dfrac{{x + 5}}{1} = \dfrac{{y + 3}}{{ - 2}} = \dfrac{{z - 2}}{1}\)

A.\(21\)
B.\(10\)
C.\(18\)
D.\(20\)

A.\(f\left( 2 \right)\)
B.\(f\left( 0 \right)\)
C.\(f\left( 5 \right)\)
D.\(f\left( 6 \right)\)

A.\(3\)
B.\(\sqrt 3 \)
C.\(\dfrac{{\sqrt 2 }}{3}\)
D.\(\dfrac{{\sqrt 3 }}{2}\)

A.\(\dfrac{{2{a^3}}}{3}\)
B.\(\dfrac{{2\sqrt 3 {a^3}}}{3}\)
C.\(\dfrac{{{a^3}}}{3}\)
D.\(\dfrac{{\sqrt 3 {a^3}}}{3}\)

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

A.\(3\)
B.\(1\)
C.\(2\)
D.\(0\)

A.\(5814\) năm
B.\(5812\) năm
C.\(5813\) năm
D.\(5811\) năm