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GATE | GATE MOCK 2017 | Question 55

Let G be the CFG, l be the number of left most derivations, r be the number of right most derivations and P be the number of parse trees. Assume l , r and P are computed for a particular string. For a given CFG ‘G’ and given string ‘w’, what is the relation between l , P , r ?

(A)

l ≤ P ≥ r

(B)

l = P = r

(C)

l ≥ P ≤ r

(D)

none of these

Answer

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