Thinking Mathematically (6th Edition)

Published by Pearson
ISBN 10: 0321867327
ISBN 13: 978-0-32186-732-2

Chapter 2 - Set Theory - 2.1 Basic Set Concepts - Exercise Set 2.1 - Page 59: 92

Answer

infinite

Work Step by Step

A={x|x belongs to N x>=50} x is natural number and x is greater than equal to 50 i.e. x>=50 means 50,51,52,53,54,…..never ends. Therefore cardinal number of the given set cannot be zero or any natural number. Therefore given sets is infinite.
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