Thinking Mathematically (6th Edition)

by Blitzer, Robert F.

Published by Pearson

ISBN 10: 0321867327

ISBN 13: 978-0-32186-732-2

Chapter 5 - Number Theory and the Real Number System - 5.1 Number Theory: Prime and Composite Numbers - Exercise Set 5.1 - Page 256: 24

Answer

True.

Work Step by Step

Sum of digits =7+8+5+1+7+2=30 which is divisible by 3. Last 2 digits are 72 which is divisible by 4. The number is divisible by 3 and 4 so it divisible by 12.

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