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Which of the following automata takes stack as auxiliary storage?

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Which of the following automata takes stack as auxiliary storage?

(a) Finite automata

(b) Push down automata

(c) Turing machine

(d) All of the mentioned

I have been asked this question in a national level competition.

I want to ask this question from PDA-acceptance by Empty Stack in portion Push Down Automata of Automata Theory

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Right choice is (b) Push down automata

For explanation: Pushdown Automaton uses stack as an auxiliary storage for its operations. Turing machines use Queue for the same.

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