Solution:
(a) In a standard deck, half of the cards are red cards and the other half are black cards. Thus;
[tex]P(red\text{ }card)=\frac{1}{2}[/tex]
(b)
[tex]\begin{gathered} P(king)=\frac{n(king)}{total} \\ \\ P(king)=\frac{4}{52} \\ \\ P(king)=\frac{1}{13} \end{gathered}[/tex]
(c)
[tex]undefined[/tex]
