Question: Mark all that apply by writing either T ( for true ) or F ( for false ) in the blank box before each statement.

Mark all that apply by writing either T (for true) or F (for false) in the blank box before each statement.
F
Every context-free grammar defines a language that can be described by a regular expression.
F
Every regular expression defines a language that cannot be described by a context-free grammar.
F
Left-regular grammars describe regular languages that cannot be described by right-regular grammars and vice versa.
F
The right-hand side of a production in a context-free grammar can be any string of terminals or nonterminals, but its left-hand side must be a single terminal.
T
The left-hand side of a production in a context-free grammar can be any string of terminals or nonterminals, but its right-hand side must be a single nonterminal.
F
All languages containing matched repetitions of pairs of symbols can be described by regular expressions.

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