Discrete Mathematics and Its Applications, Seventh Edition

Published by McGraw-Hill Education
ISBN 10: 0073383090
ISBN 13: 978-0-07338-309-5

Chapter 7 - Section 7.1 - An Introduction to Discrete Probability - Exercises - Page 451: 31

Answer

Probability = $\frac{3}{100}$

Work Step by Step

Total ways to select 3 winners out of 100 = $C$(100,3) = 161700 Ways in which Michelle is one of the 3 winners = $C$(1,1)$\times$$C$(99,2) = 4851 Probability = $\frac{4851}{161700}$ = $\frac{3}{100}$
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