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GATE | Gate IT 2005 | Question 6

  • Last Updated : 28 Jun, 2021

The language {0n 1n 2n | 1 ā‰¤ n ā‰¤ 106} is

(A) regular
(B) context-free but not regular.
(C) context-free but its complement is not context-free.
(D) not context-free

Answer: (A)

The value of ā€˜nā€™ is finite.
So, only finite number of strings can be part of given language.
Therefore, we can construct a finite state automata for this language.

Thus, option (A) is correct.

Please comment below if you find anything wrong in the above post.

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