Finite Math and Applied Calculus (6th Edition)

Published by Brooks Cole
ISBN 10: 1133607705
ISBN 13: 978-1-13360-770-0

Chapter 6 - Review - Review Exercises - Page 441: 14

Answer

15

Work Step by Step

Letting A= set of models of the iMac, B= set of colors, a set containing all combinations could be modeled as $\mathrm{A}\times B=\{(a, b)|a\in A$ and $b\in B\}$\\ (the set of all ordered pairs whose first component is in $A$,\\ and whose second component is in $B$.) The cardinality of $\mathrm{A}\times B$ is $n(A)\cdot n(B)=3\cdot 5=15$
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