40 bài tập trắc nghiệm xác suất của biến cố mức độ...

A \(\dfrac{1}{{15}}\)

B \(\dfrac{7}{{15}}\)

C \(\dfrac{8}{{15}}\)

D \(\dfrac{1}{5}\)

A \(\dfrac{1}{8}\)

B \(\dfrac{1}{3}\)

C \(\dfrac{2}{3}\)

D \(\dfrac{1}{4}\)

A 10.

B 32.

C 25.

D 2.

A \(P\left( {A.B} \right) = \dfrac{1}{8}\)

B \(P\left( {A.B} \right) = \dfrac{3}{4}\)

C \(P\left( {A.B} \right) = \dfrac{1}{4}\)

D \(P\left( {A.B} \right) = \dfrac{7}{8}\)

A \(0,2\)

B \(0,3\)

C \(0,4\)

D \(0,5\)

A \(0,94\)

B \(0,96\)

C \(0,95\)

D \(0,97\)

A \(P\left( A \right) = 1 + P\left( {\overline A } \right)\)

B \(P\left( A \right) = 1 - P\left( {\overline A } \right)\)

C \(P\left( A \right) = P\left( {\overline A } \right)\)

D \(P\left( A \right) + P\left( {\overline A } \right) = 0\)

A Xác suất của biến cố \(A\) là \(P\left( A \right) = \frac{{n\left( A \right)}}{{n\left( \Omega  \right)}}\).

B \(0 \le P\left( A \right) \le 1\).

C \(P\left( A \right) = 1 - P\left( {\overline A } \right)\).

D \(P\left( A \right) = 0\) khi và chỉ khi \(A\) là biến cố chắc chắn.

A \(\dfrac{2}{5}\)     

B \(\dfrac{9}{{28}}\)         

C \(\dfrac{1}{5}\)

D \(\dfrac{3}{{28}}\)

A \(\dfrac{1}{5}\)

B \(\dfrac{1}{{15}}\)

C \(\dfrac{{11}}{{15}}\)

D \(\dfrac{3}{5}\)

A \(0,14\)

B \(0,38\)

C \(0,24\)

D \(0,62\)

A \(P\left( A \right) = \frac{1}{2}\).                

B \(P\left( A \right) = \frac{3}{8}\).   

C \(P\left( A \right) = \frac{7}{8}\).               

D \(P\left( A \right) = \frac{1}{4}\).

A \(\dfrac{3}{{10}}.\)

B \(\dfrac{3}{5}.\)

C \(\dfrac{7}{{10}}.\)

D \(\dfrac{2}{5}.\)

A \({\left( {\dfrac{5}{6}} \right)^3}\)

B \(1 - {\left( {\dfrac{1}{6}} \right)^3}\)

C \({\left( {\dfrac{1}{6}} \right)^3}\)

D \(1 - {\left( {\dfrac{5}{6}} \right)^3}\)

A \(P = \dfrac{{17}}{{21}}\)

B \(P = \dfrac{{22}}{{24}}\)

C \(P = \dfrac{{21}}{{50}}\)

D \(P = \dfrac{{17}}{{22}}\)

A \(\dfrac{{653}}{{660}}\)

B \(\dfrac{7}{{660}}\)

C

\(\dfrac{{41}}{{55}}\)

D \(\dfrac{{14}}{{55}}\)

A \(\dfrac{1}{{30}}\)

B \(\dfrac{3}{{25}}\)

C \(\dfrac{{22}}{{25}}\)

D \(\dfrac{2}{{25}}\)

A \(\frac{{28}}{{55}}.\)

B \(\frac{{41}}{{55}}.\)

C \(\frac{{14}}{{55}}.\)

D \(\frac{{42}}{{55}}.\)

A \(50\)%.

B \(32,6\)%.

C \(60\)%.

D \(56\)%.

A 0,25

B 0,5

C 0,75     

D 0,85

A \(\dfrac{{12}}{{216}}\)

B \(\dfrac{1}{{216}}\)

C \(\dfrac{6}{{216}}\)

D \(\dfrac{3}{{216}}\)

A \(\dfrac{{4615}}{{5236}}.\)

B \(\dfrac{{5689}}{{5263}}\)

C \(\dfrac{{9682}}{{7638}}\)

D \(\dfrac{{3568}}{{2164}}\)

A \(\dfrac{{46157}}{{59236}}.\)           

B \(\dfrac{{42910}}{{48620}}\)

C \(\dfrac{{59682}}{{27638}}\)

D

\(\dfrac{{35698}}{{29164}}\)

A \(\dfrac{{12}}{{21}}\)

B \(\dfrac{{12}}{{26}}\)

C \(\dfrac{{43}}{{91}}\)

D \(\dfrac{{34}}{{16}}\)

A \(\dfrac{5}{{13}}.\)

B \(\dfrac{6}{{13}}.\)

C \(\dfrac{{49}}{{78}}\)

D \(\dfrac{7}{{13}}.\)

A \(\dfrac{2}{9}.\)

B \(\dfrac{7}{9}.\)

C \(\dfrac{9}{{11}}.\)

D \(\dfrac{2}{{11}}.\)

A \(\dfrac{4}{{33}}\)

B \(\dfrac{6}{{11}}\)

C \(\dfrac{3}{{11}}\)

D \(\dfrac{2}{{33}}\)  

A \(\dfrac{{12}}{{36}}\)

B \(\dfrac{{11}}{{36}}\)

C \(\dfrac{6}{{36}}\)

D \(\dfrac{8}{{36}}\)

A \(\dfrac{1}{6}\)

B \(\dfrac{5}{{36}}\)

C \(\dfrac{1}{9}\)

D \(\dfrac{1}{2}\)

A \(\dfrac{7}{{15}}\).

B \(\dfrac{4}{9}\).

C \(\dfrac{8}{{15}}.\)   

D \(\dfrac{7}{{45}}.\)

A 1.

B 0,42.

C 0,7.

D 0,21.

A \(\dfrac{5}{{36}}.\)

B \(\dfrac{7}{{36}}.\)

C \(\dfrac{4}{{36}}.\)

D \(\dfrac{6}{{36}}.\)

A \(\dfrac{1}{6}.\)

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

C \(\dfrac{5}{{36}}.\)

D \(\dfrac{1}{9}.\)

A \(\dfrac{3}{4}\)

B \(\dfrac{1}{4}\)

C \(\dfrac{1}{2}\)

D \(\dfrac{1}{6}\)

A \(\dfrac{1}{8}\)

B \(\dfrac{7}{8}\)

C \(\dfrac{{23}}{{24}}\)

D \(\dfrac{1}{2}\)

A \(\dfrac{{56}}{{134}}\)

B \(\dfrac{{65}}{{143}}\)

C \(\dfrac{{56}}{{143}}\)

D \(\dfrac{{65}}{{134}}\)

A \(\dfrac{9}{{16}}.\)

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

C \(\dfrac{3}{8}.\)

D \(\dfrac{7}{{16}}.\)

A \(\dfrac{1}{{6497400}}\).

B \(\dfrac{4}{{6497400}}\).

C \(\dfrac{1}{{270725}}\).

D \(\dfrac{4}{{270725}}\).