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MCQ (Single Correct Answer)
GATE CSE 2020
Consider the following languages.
L1 = { wxyx ∣ w,x,y ∈ (0+1)+ } L2 = { xy ∣ x,y ∈ (a+b)*, ∣x∣=∣y∣, x≠y }
Which one of the following is TRUE ?(A) L1 is regular and L2 is context- free(B) L1 context- free but not regular and L2 is context-free(C) Neither L1 nor L2 is context- free(D) L1 context- free but L2 is not context-free
