The probability of the complement is the probability that an desired event won't happen. In this case the event is rolling a number less than 5, therefore there are 4 desired outcomes. The probability of this event happening is:
[tex]P(A)\text{ = }\frac{4}{6}[/tex]Its complement is:
[tex]\begin{gathered} P(A^{\prime})\text{ = 1 - P(A)} \\ P(A^{\prime})\text{ = 1 - }\frac{4}{6}\text{ = }\frac{2}{6} \end{gathered}[/tex]Therefore the probability of the complement of rolling a number less than 5 is 2
