#### Answer

$15$

#### Work Step by Step

Each number divisible by 15 must be divisible by 3. Each number divisible by 15 must also be divisible by five. Therefore, each number divisible by 15 must be both divisible by three and five.

Published by
Pearson

ISBN 10:
0321955048

ISBN 13:
978-0-32195-504-3

$15$

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