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Question

What are the sequence of popped out values if the sequence of operations - push(1), push(2), pop, push(1), push(2), pop, pop, pop, push(2), pop are performed on a stack.

a.

2, 2, 1, 1, 2

b.

2, 2, 1, 2, 2

c.

2, 1, 2, 2, 1

d.

2, 1, 2, 2, 2

Answer: (a).2, 2, 1, 1, 2

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Q. What are the sequence of popped out values if the sequence of operations - push(1), push(2), pop, push(1), push(2), pop, pop, pop, push(2), pop are performed on a stack.

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