Let G Be the Phrase-Structure Grammar with Vocabulary $\{ S \rightarrow A B a , S \rightarrow B a , A \rightarrow a B , A B \rightarrow b , B \rightarrow a b \}$

question 23

Short Answer

Let G be the phrase-structure grammar with vocabulary V={A, B, a, b, S} , terminal element set T={a, b} , start symbol S , and production set P= $\{ S \rightarrow A B a , S \rightarrow B a , A \rightarrow a B , A B \rightarrow b , B \rightarrow a b \}$
are derivable from A ?
(1) babaa,
(2) aab ,
(3) bba

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Definitions:

About Average

A term used to describe a value or performance that is near the middle or mean of a distribution or set of data.

Central Tendency

A statistical measure that identifies a single value as representative of the middle or centre of a distribution, commonly measured by mean, median, or mode.

Data

Information that has been translated into a form that is efficient for movement or processing.

Weighted Mean

An average where each data point contributes to the mean with a weight that reflects its importance or frequency.