Giá trị của \[B = {\rm{lim}}\frac{{\sqrt[{\rm{n}}]{{n!}}}}{{\sqrt {{n^3} + 2n} }}\] bằng:

A.\[\frac{1}{5}\]

B. \(\frac{1}{2}\)

C. 0

D. \[\frac{{ - 3}}{2}\]

A.\[\frac{{{a^2}\left( {{2^{100}} - 1} \right)}}{{{2^{100}}}}\]

B. \[2{a^2}\]

C. \[\frac{{{a^2}}}{{{2^{100}}}}\]

D. \[\frac{{{a^2}\left( {{2^{99}} - 1} \right)}}{{{2^{98}}}}\]

A.\[\lim {q^n} = 0\]

B. \[\lim q = 0\]

C. \[\lim \left( {n.q} \right) = 0\]

D. \[\lim \frac{n}{q} = 0\]

A.\[\frac{1}{5}.\]

B. \[ - \frac{4}{5}.\]

C. \[\frac{4}{5}.\]

D. \[ - \frac{1}{5}.\]

A.\[\lim \sqrt[3]{{{u_n}}} = L\]

B. \[\lim \sqrt {{u_n}} = L\]

C. \[\lim \sqrt {{u_n}} = \sqrt L \]

D. \[\lim \sqrt[3]{{{u_n}}} = \sqrt[3]{L}\]

A.\(\frac{1}{2}\)

B. \[\frac{1}{4}.\]

C. 1

D. 2

A.\[\lim \left( {{u_n} + {v_n}} \right) = L + M\]

B. \[\lim \left( {{u_n} + {v_n}} \right) = L - M\]

C. \[\lim \left( {{u_n} - {v_n}} \right) = L + M\]

D. \[\lim \left( {{u_n} - {v_n}} \right) = L.M\]