Precalculus: Concepts Through Functions, A Unit Circle Approach to Trigonometry (3rd Edition)

Published by Pearson
ISBN 10: 0-32193-104-1
ISBN 13: 978-0-32193-104-7

Chapter 12 - Counting and Probability - Section 12.3 Probability - 12.3 Assess Your Understanding - Page 885: 34



Work Step by Step

We know that probability of the event F is $P(F)=\frac{\text{number of favourable outcomes}}{\text{number of all outcomes}}=\frac{n(F)}{n(S)}$. We have $E=\{1,3,5,7,9\}$ so $n(F)=5$ and $n(S)=10$. Thus, $P(F)=\dfrac{5}{10}=0.5$.
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