Answer
three a’s and end in an a.
Work Step by Step
The language $b∗ab∗ab∗a$
consists of all strings of a’s and b’s that contain exactly three a’s and end in an a.
Discrete Mathematics with Applications 4th Edition
by Epp, Susanna S.
Published by
Cengage Learning
ISBN 10:
0-49539-132-8
ISBN 13:
978-0-49539-132-6
Chapter 12 - Regular Expressions and Finite-State Automata - Exercise Set 12.1 - Page 790: 19
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