Answer
(a) no
(b) yes
Work Step by Step
(a) 28 is not divisible by 3 (since its digits add up to a number not divisible by 3: 2+8=10, which is not divisible by 3)
(b) 28/4=7, so 28 is divisible by 4
Elementary Technical Mathematics
by Nelson, Robert; Eren, Dale;
Published by
Brooks Cole
ISBN 10:
1285199197
ISBN 13:
978-1-28519-919-1
Chapter 1 - Section 1.5 - Prime Factorization - Exercise - Page 25: 2
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