UGC-NET | UGC NET CS 2017 Jan – III | Question 20

Consider the languages L1 = φ and L2 = {1}. Which one of the following represents
L*₁∪ L*₁ L*₂ ?
(A) {∈}
(B) {∈, 1}
(C) φ
(D) 1*


Answer: (D)

Explanation:

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