Answer
a) no
b) yes
c) no
d) yes
Work Step by Step
a) 37=3+34, and 34 is not a multiple of 7
b) 66=3+63=3+7(9)
c) -17=3-20, and 2- is not a multiple of 7
d) -67=3-70=3+7(-10)
Discrete Mathematics and Its Applications, Seventh Edition
by Rosen, Kenneth
Published by
McGraw-Hill Education
ISBN 10:
0073383090
ISBN 13:
978-0-07338-309-5
Chapter 4 - Section 4.1 - Divisibility and Modular Arithmetic - Exercises - Page 245: 28
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