Consider the grammar G S → pSqS / qSpS / ε G is:

Answer: D. Ambiguous — The grammar is ambiguous as it generates two parse tree for the string “ppqqpq” S->pSqS | qSpS |

1. A.

   LL(1)

2. B.

   CLR(1)

3. C.

   LL(1) and CLR(1)

4. D.

   Ambiguous

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Correct answer: D

The grammar is ambiguous as it generates two parse tree for the string “ppqqpq”
S->pSqS | qSpS |