Calculus (3rd Edition)

Published by W. H. Freeman
ISBN 10: 1464125260
ISBN 13: 978-1-46412-526-3

Appendix A - The Language of Mathematics - Exercises - Page A6: 17


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Work Step by Step

First, the converse statement is: If $m$ is divisible by $12$ then, $m$ is divisible by $9$ and $4$. The counterexample is $m=24$ which is divisible by $12$, but not divisible by $9$.
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