Answer
successful and established authors
25
Work Step by Step
$C\cap N'$ contains all the authors who are successful and not new. (That means who are successful and established.)
From the table we see that it contains 25 authors.
Finite Math and Applied Calculus (6th Edition)
by Waner, Stefan; Costenoble, Steven
Published by
Brooks Cole
ISBN 10:
1133607705
ISBN 13:
978-1-13360-770-0
Chapter 6 - Section 6.2 - Cardinality - Exercises - Page 416: 37
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