Question: For each of these sets, Construct a PDA (which accepts by empty stack) for it: The set of strings over {a, b} such that twice

For each of these sets, Construct a PDA (which accepts by empty stack) for it: The set of strings over {a, b} such that twice the number of a's equals three times the number of b's The set of strings over {a, b} in which every prefix contains at least as many a's as b's

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