Elementary Technical Mathematics

Published by Brooks Cole
ISBN 10: 1285199197
ISBN 13: 978-1-28519-919-1

Chapter 1 - Section 1.5 - Prime Factorization - Exercise: 55

Answer

$2\times3\times7$

Work Step by Step

$2|\underline{42}$ last digit is even $3|\underline{21}$ sum of digits is divisible by 3 $\ \ \ \ \ 7$
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