A.\(\dfrac{3}{5}\)
B.\(\dfrac{{\sqrt {15} }}{5}\)
C.\(\dfrac{{\sqrt {10} }}{5}\)
D.\(\dfrac{4}{5}\)

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

A.\(2\)
B.\(1\)
C.\(4\)
D.\(3\)

A.\(\dfrac{5}{{27}}\)
B.\(\dfrac{5}{{37}}\)
C.\(\dfrac{5}{{32}}\)
D.\(\dfrac{1}{3}\)

A.\(\dfrac{{x - 2}}{1} = \dfrac{{y + 3}}{{ - 1}} = \dfrac{{z - 5}}{4}\)
B.\(\dfrac{{x - 1}}{1} = \dfrac{{y + 2}}{3} = \dfrac{{z - 1}}{{ - 4}}\)
C.\(\dfrac{x}{{ - 1}} = \dfrac{{y - 1}}{3} = \dfrac{{z - 3}}{2}\)
D.\(\dfrac{{x - 1}}{{ - 1}} = \dfrac{{y + 2}}{3} = \dfrac{{z - 1}}{2}\)

A.\(5\)
B.\(4\)
C.\(2\)
D.\(7\)

A.\(M = \dfrac{1}{6}N\)
B.\(M = \dfrac{3}{2}N\)
C.\(M = \dfrac{2}{3}N\)
D.\(M = \sqrt N \)

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

A.\(\overrightarrow {{u_2}} \left( {1; - 2;2} \right)\)
B.\(\overrightarrow {{u_1}} \left( {1; - 2; - 1} \right)\)
C.\(\overrightarrow {{u_3}}  = \left( {2;1;2} \right)\)
D.\(\overrightarrow {{u_4}}  = \left( {4; - 2;1} \right)\)

A.\(\left[ {\dfrac{1}{2};1} \right]\)
B.\(\left( {0;1} \right)\)
C.\(\left( {\dfrac{1}{2};1} \right]\)
D.\(\left[ {0;1} \right]\)