Probability Axioms

Axioms

1. $P(A)\ge 0,\forall A\in S$
2. $P(S)=1$
3. $\forall$ Disjoint $A_1,A_2,\cdots ⟹P({\cup }_i{A}_i)={\sum }_{i=1}^{n}P(A_i)$