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The minimum number of productions required to produce a language consisting of palindrome strings over ?={a,b} is

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Context free grammar is not closed under:
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Given the following two languages : L1 = {an bn | n ? 0, n ? 100} L2 = {w ? {a, b, c}*| na(w) = nb(w) = nc(w)} Which of the following options is correct ?
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the reverse of the string w. Which of these languages are deterministic Context-free languages?
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The language {am bn Cm+n | m, n ? 1} is
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Consider the language L = { an ? n?0 }?{ anbn ? n?0 } and the following statements.I. L is deterministic context-free.II. L is context-free but not deterIII. L is not LL(k) for any k.Which of the above statements is/are TRUE ?
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