## Thinking Mathematically (6th Edition)

$\frac{1}{2}$
P(E) = $\frac{no.\ of\ outcomes\ in\ favor}{Total\ no.\ of\ outcomes}$ It is equally probable that the pointer will land on any one of the ten colored regions, and we spin again if we land on a borderline. There are 10 total regions. E: A region that is red or blue. Favorable outcomes= {3 Regions of Red and 2 Regions of Blue} P(E) = $\frac{5}{10}$ = $\frac{1}{2}$