Answer
20
Work Step by Step
The first step can be done $1+2+2=5$ possible ways.
the second step can be done $2+2=4$ possible ways
The total number of the possibilities is the product of these : $5*4=20$
Finite Math and Applied Calculus (6th Edition)
by Waner, Stefan; Costenoble, Steven
Published by
Brooks Cole
ISBN 10:
1133607705
ISBN 13:
978-1-13360-770-0
Chapter 6 - Section 6.3 - Decision Algorithms: The Addition and Multiplication Principles - Exercises - Page 423: 8
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