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In the above question aren’t we supposed to delete the production A → b because at the end after removing the useless symbols, A is unreachable from the start symbol S.

So, wont be the answer S → a only after removing useless symbols ?

in Theory of Computation by (1.6k points)
edited by | 14 views
Yes you are correct.

my id is not being taken even after uploading less than 2 MB size document, so I cant comment there.

what ?

It's now resolved. It ws not taking a png format file of less dan 2 MB. So after several tries, a jpeg was taken.

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