(Đúng hay Sai) P(A hợp B)=31/40
Giải thích
d) \(P\left( {A \cup B} \right) = P\left( A \right) + P\left( B \right) - P\left( {AB} \right)\)\( \Rightarrow P\left( {A \cup B} \right) = \frac{{17}}{{40}}\);Suy ra Sai
d) \(P\left( {A \cup B} \right) = P\left( A \right) + P\left( B \right) - P\left( {AB} \right)\)\( \Rightarrow P\left( {A \cup B} \right) = \frac{{17}}{{40}}\);Suy ra Sai