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GATE | Gate IT 2008 | Question 31
Consider the following languages.
L1 = {ai bj ck | i = j, k ≥ 1}
L1 = {ai bj | j = 2i, i ≥ 0}
Which of the following is true?
L1 = {ai bj ck | i = j, k ≥ 1}
L1 = {ai bj | j = 2i, i ≥ 0}
Which of the following is true?
(A)
L1 is not a CFL but L2 is
(B)
L1 ∩ L2 = ∅ and L1 is non-regular
(C)
L1 ∪ L2 is not a CFL but L2 is
(D)
There is a 4-state PDA that accepts L1, but there is no DPDA that accepts L2
Answer
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