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GATE | Gate IT 2008 | Question 76
A CFG G is given with the following productions where S is the start symbol, A is a non-terminal and a and b are terminals.
S→aS∣A
A→aAb∣bAa∣ϵ
For the correct answer in Q75, how many steps are required to derive the string and how many parse trees are there?
S→aS∣A
A→aAb∣bAa∣ϵ
For the correct answer in Q75, how many steps are required to derive the string and how many parse trees are there?
(A)
6 and 1
(B)
6 and 2
(C)
7 and 2
(D)
4 and 2
Answer
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