College Algebra 7th Edition

by Stewart, James; Redlin, Lothar; Watson, Saleem

Published by Brooks Cole

ISBN 10: 1305115546

ISBN 13: 978-1-30511-554-5

Chapter 9, Counting and Probability - Chapter 9 Review - Concept Check - Page 682: 1

Answer

See explanation

Work Step by Step

A) If one event occurs $r$ ways and another $y$ ways, the number of ways both occurs is $r\times y$. B) $3*5=\boxed{15}$

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