Elementary Technical Mathematics

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

Chapter 1 - Unit 1A Review: 20

Answer

$3\times3\times3\times5$

Work Step by Step

$5|\underline{135}$ last digit is 5 $3|\underline{\ \ 27}$ sum if digits is divisible by 3 $3|\underline{\ \ \ \ 9}$ sum if digits is divisible by 3 $\ \ \ \ \ \ \ 3$
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