# Chapter 11 - Counting Methods and Probability Theory - 11.4 Fundamentals of Probability - Exercise Set 11.4 - Page 716: 42

$\frac{1}{5}$

#### Work Step by Step

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 yellow region There are 2 regions of yellow. Favorable outcomes= {2 Regions} P(E) = $\frac{2}{10}$ =$\frac{1}{5}$

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