ME Test Series

Question

S→ SABC

A→ aAd/ϵ

B→ bB/ϵ

C→ Cc/Be/ϵ

Number of elements in the follow(S) are __________

Comments

5?

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$5$ elements {$,a,b,c,e}

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e won't be there?

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@Shadan Karim post the answer

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I think answer will be 5,  @Gupta731 why you add b two times?

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Sorry, edited now

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@Gupta731 , yes 5 is the answer given, how c and e will be present, explain.

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Follow(S) is dollar and also Follow(S) is first(A)

Now, First(A) is {a,ϵ}     $\rightarrow$ here we got a

If ϵ from First(A) is put into the first production, Follow(S) will be First(B) which is {b,ϵ}  $\rightarrow$ here we got b

If ϵ from First(B) is put into the first production Follow(S) is First(C) which is First of $Cc$ and First of $Be$

First (C) is also ϵ so from Cc we get c

First(B) is also ϵ so from Be we get e

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for above grammar what is first(S)??