02 - bayes theorem, conditional prob

Mutually Exclusive: $E\cap F=\varnothing$ Union Rule: $P(E\cup F)=P(E)+P(F)-P(E\cap F)$ Complement Rule: $P(E)=1-P(E^{\prime })$

$P(n,k)=\frac{n!}{(n-k)!}$ $C(n,k)=\frac{n!}{k!(n-k)!}$