A.50  
B.10   
C.\(\sqrt {10} \)
D.\(5\sqrt 2 \)

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

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

A.\(23.591.000\) đồng
B.\(36.173.000\) đồng
C.\(9.437.000\) đồng
D.\(4.718.000\) đồng

A.\(\dfrac{{{a^3}}}{8}\)
B.\(\dfrac{{3{a^3}}}{8}\)
C.\(\dfrac{{\sqrt 3 {a^3}}}{{12}}\)
D.\(\dfrac{{{a^3}}}{4}\)

A.\(1\)
B.\(0\)
C.\(\;2\)
D.\(4\)

A.\(\dfrac{{23}}{3}\)
B.\(\dfrac{{23}}{6}\)
C.\(\dfrac{{17}}{6}\)
D.\(\dfrac{{17}}{3}\)

A.\(1024\)
B.\(2047\)
C.\(1022\;\)
D.\(1023\)

A.\(f\left( 0 \right)\)
B.\(f\left( { - 3} \right) + 6\)
C.\(f\left( 2 \right) - 4\)
D.\(f\left( 4 \right) - 8\)

A.\(\left\{ {\begin{array}{*{20}{c}}{x = 1 + t}\\{y = 2 - 3t}\\{z =  - 1 + 2t}\end{array}} \right.\)       
B.\({\rm{\;}}\left\{ {\begin{array}{*{20}{c}}{x = 1 + t}\\{y = 2 - 3t}\\{z = 1 + 2t}\end{array}} \right.\)  
C.\(\left\{ {\begin{array}{*{20}{c}}{x = 1 + t}\\{y =  - 3 + 2t}\\{z = 2 - \;t}\end{array}} \right.\)
D. \(\left\{ {\begin{array}{*{20}{c}}{x = 1 + t}\\{y = 1 + 2t}\\{z =  - \;t}\end{array}} \right.\)