A.\(5\)
B.\(4\)
C.\(1\)
D.\(3\)

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

A.\(\left( { - \dfrac{1}{3};\dfrac{4}{3};\dfrac{2}{3}} \right)\)
B.\(\left( { - \dfrac{1}{2};2;1} \right)\)
C.\(\left( {1;0; - 4} \right)\)
D.\(\left( { - 1;4;2} \right)\)

A.\(16\pi \) \(\left( {c{m^3}} \right)\)
B.\(36\pi \) \(\left( {c{m^3}} \right)\)
C.\(15\pi \) \(\left( {c{m^3}} \right)\)
D.\(\dfrac{{80\pi }}{3}\) \(\left( {c{m^3}} \right)\)

A.\(\pi {R^2}h\)
B.\(\dfrac{1}{3}\pi {R^2}h\)
C.\(2\pi {R^2}h\)
D.\(2\pi Rh\)

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

A.\(V = \dfrac{1}{3}Bh\)
B.\(V = Bh\)
C.\(V = \dfrac{1}{2}Bh\)
D.\(V = \dfrac{1}{6}Bh\)

A.\(z =  - 4 + 3i\)
B.\(z =  - 3 + 4i\)
C.\(z = 3 - 4i\)
D.\(z = 3 + 4i\)

A.\( - 5 + 5i\)
B.\( - 5i\)
C.\(5 - 5i\)
D.\( - 1 + i\)

A.\(7\) và \(\sqrt 5 \)
B.\( - 7\) và \(\sqrt 5 \)
C.\(7\) và \(i\sqrt 5 \)
D.\(7\) và \( - \sqrt 5 \)