UGC-NET | UGC NET CS 2016 Aug – III | Question 55

Given the following two languages :
L1 = {uww^Rν | u, v, w ∈ {a, b}⁺}
L2 = {uww^Rν | u, ν, w ∈ {a, b}⁺, |u| > |ν|}
Which of the following is correct ?
(A) L₁ is regular language and L₂ is not regular language.
(B) L₁ is not regular language and L₂ is regular language.
(C) Both L₁ and L₂ are regular languages.
(D) Both L₁ and L₂are not regular languages.

Answer: (A)
Explanation:
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