College Algebra 7th Edition

Published by Brooks Cole
ISBN 10: 1305115546
ISBN 13: 978-1-30511-554-5

Chapter 9, Counting and Probability - Chapter 9 Test - Page 686: 10

Answer

a) $\frac{5}{13}$ b) $\frac{6}{13}$ c) $\frac{9}{13}$

Work Step by Step

a) There are 5 red balls and 13 balls in total, so the probability of drawing a red ball is $\frac{5}{13}$. b) There are 2 even-numbered red balls and 4 even-numbered white balls, so there are 6 even-numbered balls and 13 in total, so the probability of drawing an even-numbered ball is $\frac{6}{13}$. c) There are 5 red balls and 4 even-numbered white balls, so there are 9 red or even-numbered balls, so the probability of drawing a red or even-numbered ball is $\frac{9}{13}$.
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