Re: Grammar useless variable

cyberbloke wrote:
In the following Grammar which variable is useless:
S-->B
B-->bB
A-->aB

Thanks


Go back to the definition of "useless variable." Does
that help? If these problems are part of a course
of instruction, there are people who are paid to
clear up questions like these.


Regards,

Rick

p.s. Try deriving some strings from S. What happens?
.

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