Question: 5. Define a context- free grammar to generate the set of strings {a n b n | n is zero or a positive integer}. 6.

5. Define a context- free grammar to generate the set of strings {an bn | n is zero or a positive integer}.

6. Consider the following grammar:

S ---> abB, A ---> aaBb, B ---> bbAa, A ---> 5. Define a context- free grammar to generate the set of strings

Derive abbbaabba from the grammar rules. Show each step. How many strings can this grammar generate? Draw a syntax tree for your derivation.

7. Cnsider the grammar with the following rules:

S ---> aAB, A ---> bBb, B ---> A | {an bn | n is zero or a positive integer}. 6. Consider.

Find the FIRST sets of S, A, B.the following grammar: S ---> abB, A ---> aaBb, B ---> bbAa,

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