Random event

All sample’s collection be called sample zone.

$\Omega_1=\{ 1, 2, 3, 4, 5, 6 \}$ $\Omega_2=\{ t \quad| t\ge0\}$

$\emptyset \subset A \subset B$ $A \subset B \quad B \subset C \Rightarrow A \subset C$

$A \subset B \quad \&\& \quad B \subset A$

$A_1 \bigcup A_2 ... \bigcup A_n$

$\bigcup_{i=1}^nA_i$

$A_1 \bigcap A_2 ... \bigcap A_n$

$\bigcap_{i=1}^nA_i$

$AB = \emptyset$

$AB = \emptyset \quad \&\& \quad A \bigcup B = \Omega$ $A = \overline B \quad B = \overline A$

$A - B = A \overline B = A - (AB)$

$\bigcup_{i=1}^nA_i=\Omega \quad \&\& \quad A_i \bigcap A_j=\emptyset (i \neq j)$