A.\(1\).
B.\(0\).
C.\(3\)  .
D.\(2\)

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

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

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

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

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

A.282240
B.100800
C.604800
D.\(840\).

A.\(\left( { - \infty ;\frac{9}{2}} \right)\).
B.\(\left[ {4;\frac{9}{2}} \right]\) .
C.\(\left( { - \infty ;4} \right)\).
D.\(\left[ {4; + \infty } \right)\).

A.\({3^{2017}} + 1\)
B.\(\frac{1}{2}\left( {{3^{2017}} + 1} \right)\)
C.\({3^{2017}} - 1\)
D.\(\frac{1}{2}\left( {{3^{2017}} - 1} \right)\)

A.\(\left\{ \begin{array}{l}x =  - 1 + 2t\\y = 2t\\z = 1 + t\end{array} \right.\)
B.\(\left\{ \begin{array}{l}x =  - 3 + t\\y = 2 + 2t\\z = 2\end{array} \right.\)
C.\(\left\{ \begin{array}{l}x =  - 3 + 2t\\y = 2 - 2t\\z = 2 - t\end{array} \right.\)
D.\(\left\{ \begin{array}{l}x =  - 1 + t\\y =  - t\\z = 1 + 4t\end{array} \right.\)