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This set of Automata Theory Multiple Choice Questions & Answers (MCQs) focuses on “Context Free Grammar-Derivations and Definitions”. 1. The entity which generate Language is termed as:
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May 21, 2019 · Step 2. Eliminate null, unit and useless productions. If CFG contains null, unit or useless production rules, eliminate them. You can refer the this article to eliminate these types of production rules.
Any production rule in the form A → B where A, B ∈ Non-terminal is called unit production.. Removal Procedure −. Step 1 − To remove A → B, add production A → x to the grammar rule whenever B → x occurs in the grammar. [x ∈ Terminal, x can be Null] Step 2 − Delete A → B from the grammar.
Oct 8, 2022 · S→AB |CA B→BC |AB A→a C→aB | b Here B is not derive any terminal string so remove productions contains B S→CA A→a C→b&
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