A.\(\dfrac{7}{{15}}\)
B.\(\dfrac{8}{{15}}\)
C.\(\dfrac{1}{5}\)
D.\(\dfrac{1}{{15}}\)

A.\(10\)
B.\( - 6\)
C.\(2\sqrt 5 \)
D.\( - 9\)

A.\(I\left( {2; - 1; - 3} \right),\,\,R = 4\)
B.\(I\left( { - 2;1;3} \right),\,\,R = 2\sqrt 3 \)
C.\(I\left( {2; - 1; - 3} \right),\,\,R = \sqrt {12} \)
D.\(I\left( { - 2;1;3} \right),\,\,R = 4\)

A.\(b > a > c\)
B.\(c > b > a\)
C.\(a > b > c\)
D.\(a > c > b\)

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

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

A.\({S_{xq}} = 2\pi Rh\)
B.\({S_{tp}} = 2\pi Rh + \pi {R^2}\)
C.\({S_{tp}} = 2\pi R\left( {h + R} \right)\)
D.\(V = \pi {R^2}h\)

A.\(a\sqrt 3 \)
B.\(\dfrac{{3a}}{4}\)
C.\(\dfrac{{a\sqrt 3 }}{2}\)
D.\(\dfrac{{2a}}{3}\)

A.\({e^4} - e\)
B.\(\dfrac{1}{3}\left( {{e^4} - e} \right)\)
C.\(\dfrac{1}{3}\left( {{e^4} - 1} \right)\)
D.\(\dfrac{1}{3}\left( {{e^4} + e} \right)\)

A.\(f\left( 4 \right) = 529\)
B.\(f\left( 4 \right) = 256\)
C.\(f\left( 4 \right) = 961\)
D.\(f\left( 4 \right) = 441\)