Thinking Mathematically (6th Edition)

Published by Pearson
ISBN 10: 0321867327
ISBN 13: 978-0-32186-732-2

Chapter 4 - Number Representation and Calculation - 4.2 Number Bases in Positional Systems - Exercise Set 4.2: 22

Answer

$15_{\text{seven}}$

Work Step by Step

Note that $12 \div 7 = 1$ remainder of $5$. Thus, $12=(1 \times 7) + (5 \times 1) \\12=15_{\text{seven}}$
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