A.\(6\)
B.\(0\)
C.\(30\)
D.\(25\)

A.\(10\)
B.\(12\)
C.\(20\)
D.\(23\)

A.\(7\% \)
B.\(22\% \)
C.\(45\% \)
D.\(50\% \)

A.\(1120\)
B.\(1075\)
C.\(900\)
D.\(3095\)

A.\(\overrightarrow a  + \overrightarrow b  + \overrightarrow c  = \overrightarrow d \)
B.\(\overrightarrow a  = \overrightarrow b  + \overrightarrow c \)
C.\(\overrightarrow b  - \overrightarrow c  + \overrightarrow d  = \overrightarrow 0 \)
D.\(\overrightarrow a  + \overrightarrow b  + \overrightarrow c  + \overrightarrow d  = \overrightarrow 0 \)

A.\(k = 1\)
B.\(k = \dfrac{{2017.\sqrt {2018} }}{2}\)
C.\(k = \dfrac{{2016}}{{2017}}\sqrt {2019} \)
D.\(k = 2\sqrt {2019} \)

A.\(0\)
B.\( + \infty \)
C.\(\dfrac{1}{2}\)
D.\( - \infty \)

A.\(m =  - 3\)
B.\(m =  - 1\)
C.\(m = 0\)
D.\(m = 3\)

A.\(\dfrac{4}{{15}}\)
B.\(\dfrac{{12}}{{25}}\)
C.\(\dfrac{6}{{25}}\)
D.\(\dfrac{4}{{25}}\)

A.\(\left( {0;1} \right)\)
B.\(\left( {1;2} \right)\)
C.\(\left( { - 1;0} \right)\)
D.\(\left( {2;3} \right)\)