Question: The result evaluating the postfix expression: 2 31*+9. 2 -2 -4 QUESTION 2 If the following operations on the stack is performed and stack size

The result evaluating the postfix expression: 2 31*+9. 2 -2 -4 QUESTION 2 If the following operations on the stack is performed and stack size is 5; push (1) pop(); push (2): push(); pop() .push(4); pop() .pop(); push (5); After the last operation, the total number of elements present in the stack is 1 2 3 4

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