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Question 6307 – CHENNAI MATHEMATICAL INSTITUTE M.Sc. / Ph.D. Programme in Computer Science (15 May 2018)

Which of the words below matches the regular expression a(a + b)* b + b(a + b)* a?

Correct Answer: D

Question 1 Explanation: 
Word should start with an a and end with b, or start with b and end with a.
A
aba
B
bab
C
abba
D
aabb
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