GATE | GATE-CS-2016 (Set 1) | Question 52
Consider the following context-free grammars:
Attention reader! Don’t stop learning now. Practice GATE exam well before the actual exam with the subject-wise and overall quizzes available in GATE Test Series Course.
Learn all GATE CS concepts with Free Live Classes on our youtube channel.
Which one of the following pairs of languages is generated by G1 and G2, respectively
(A) A
(B) B
(C) C
(D) D
Answer: (D)
Explanation: In G1, there will be atleast 1 b becase S->B and B->b. But no of A’s can be 0 as well and no of A and B are independent.
In G2, either we can take S->aA or S->bB. So it must have atleast 1 a or 1 b.
So option D is correct.
