Discrete Mathematics with Applications 4th Edition

Published by Cengage Learning
ISBN 10: 0-49539-132-8
ISBN 13: 978-0-49539-132-6

Chapter 4 - Elementary Number Theory and Methods of Proof - Exercise Set 4.3 - Page 178: 32



Work Step by Step

All the customer's numbers are multiples of three. Therefore, any sum of a set of the numbers must also be divisible by 3. Since 100 is not divisible by 3, it is impossible to form a set of these numbers that adds to 100.
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